


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
182 FNUS56 KEKA 071954 FWFEKA FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA NATIONAL WEATHER SERVICE Eureka CA 1254 PM PDT Sun Sep 7 2025 .DISCUSSION...No significant changes to the previous forecast. Dry weather and seasonable temperatures are expected today. Winds will generally remain light and terrain driven except for stronger diurnal westerly breezes in the valleys of Trinity, Lake and Mendocino Counties. Cooler weather, higher humidity and a chance for wetting rain will arrive with an upper level low on Monday. There may even be a few wet thunderstorms with the rain on Monday. An enhanced breezy west is forecast Monday late afternoon and evening over the higher terrain in Lake County where wind gusts over 25 mph are probable (50 to 80%). Additional light rain and a few wet thunderstorms will be possible for the remainder of the week, especially across the interior. A ridge brings warming and drying late in the week. CAZ201-081345- North Coast- 1254 PM PDT Sun Sep 7 2025 .TONIGHT... * Sky/Weather............Mostly cloudy. Patchy dense fog early in the evening. Patchy fog after midnight. Slight chance of rain after midnight. * Chance Lightning.......0% increasing to 10% after midnight. * Min Temperature....... Valleys/lwr slopes...51-55 Ridges/upr slopes....51-58 * Max Humidity....... Valleys/lwr slopes...84-99 percent Ridges/upr slopes....77-92 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. Ridges/upr slopes....Northwest winds 5 mph...shifting to the southeast after midnight. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....0 percent. .MONDAY... * Sky/Weather............Patchy dense fog in the morning. Rain likely early in the morning. Showers and slight chance of thunderstorms in the late morning and afternoon. * Chance Lightning.......20%. * Max Temperature....... Valleys/lwr slopes...65-73 Ridges/upr slopes....61-69 * Min Humidity....... Valleys/lwr slopes...78-93 percent Ridges/upr slopes....73-88 percent * 20-Foot Winds... Valleys/lwr slopes...South winds 5 to 7 mph. Ridges/upr slopes....South winds 5 to 8 mph. * Mixing Height..........2600 ft AGL. * Chc of Wetting Rain....80 percent. .MONDAY NIGHT... * Sky/Weather............Showers and slight chance of thunderstorms in the evening, then rain likely after midnight. * Min Temperature....... Valleys/lwr slopes...53-58 Ridges/upr slopes....53-60 * Max Humidity....... Valleys/lwr slopes...89-99 percent Ridges/upr slopes....81-96 percent * 20-Foot Winds... Valleys/lwr slopes...South winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. Ridges/upr slopes....South winds 5 to 7 mph...shifting to the southeast 5 mph after midnight. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....70 percent. .TUESDAY... * Sky/Weather............Mostly cloudy. Patchy fog early in the morning. Rain likely through the day. * Max Temperature....... Valleys/lwr slopes...65-73 Ridges/upr slopes....62-67 * Min Humidity....... Valleys/lwr slopes...82-97 percent Ridges/upr slopes....78-93 percent * 20-Foot Winds... Valleys/lwr slopes...Light winds 2 to 5 mph...becoming west 5 to 8 mph in the afternoon. Ridges/upr slopes....Southeast winds 5 mph...shifting to the west 5 to 6 mph in the afternoon. * Mixing Height..........2700 ft AGL. * Chc of Wetting Rain....40 percent. $$ CAZ202-081345- Coastal Mendocino- 1254 PM PDT Sun Sep 7 2025 .TONIGHT... * Sky/Weather............Mostly cloudy. Patchy fog in the late evening and overnight. Chance of rain late in the night. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...53-56 Ridges/upr slopes....48-56 * Max Humidity....... Valleys/lwr slopes...90-100 percent Ridges/upr slopes....82-97 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 mph in the evening...becoming light winds 2 to 4 mph. Ridges/upr slopes....Northwest winds 5 mph in the evening...becoming downslope/downvalley 2 to 4 mph. * Mixing Height..........100 ft AGL. * Chc of Wetting Rain....0 percent. .MONDAY... * Sky/Weather............Chance of rain in the morning, then showers likely and slight chance of thunderstorms in the afternoon. * Chance Lightning.......20%. * Max Temperature....... Valleys/lwr slopes...65-73 Ridges/upr slopes....66-72 * Min Humidity....... Valleys/lwr slopes...80-95 percent Ridges/upr slopes....66-81 percent * 20-Foot Winds... Valleys/lwr slopes...South winds 5 to 8 mph. Ridges/upr slopes....South winds 5 to 8 mph. * Mixing Height..........2600 ft AGL. * Chc of Wetting Rain....20 percent. .MONDAY NIGHT... * Sky/Weather............Rain likely through the night. Patchy fog early in the morning. * Min Temperature....... Valleys/lwr slopes...56-59 Ridges/upr slopes....51-59 * Max Humidity....... Valleys/lwr slopes...91-100 percent Ridges/upr slopes....85-97 percent * 20-Foot Winds... Valleys/lwr slopes...South winds 5 to 8 mph. Ridges/upr slopes....South winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. * Mixing Height..........200 ft AGL. * Chc of Wetting Rain....20 percent. .TUESDAY... * Sky/Weather............Mostly cloudy. Patchy fog in the morning. Chance of rain through the day. * Max Temperature....... Valleys/lwr slopes...64-70 Ridges/upr slopes....64-70 * Min Humidity....... Valleys/lwr slopes...81-96 percent Ridges/upr slopes....69-84 percent * 20-Foot Winds... Valleys/lwr slopes...Light winds 2 to 4 mph...becoming northwest 5 to 9 mph in the afternoon. Ridges/upr slopes....Variable 2 to 5 mph...becoming northwest 5 to 8 mph in the afternoon. * Mixing Height..........2400 ft AGL. * Chc of Wetting Rain....10 percent. $$ CAZ203-204-081345- Upper Smith-Lower Middle Klamath- 1254 PM PDT Sun Sep 7 2025 .TONIGHT... * Sky/Weather............Mostly cloudy. Slight chance of rain after midnight. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...53-56 Ridges/upr slopes....52-55 * Max Humidity....... Valleys/lwr slopes...79-94 percent Ridges/upr slopes....63-74 percent * 20-Foot Winds... Valleys/lwr slopes...Southwest winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. Ridges/upr slopes....Southwest winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....0 percent. .MONDAY... * Sky/Weather............Showers likely early in the morning, then showers and slight chance of thunderstorms in the late morning and afternoon. * Chance Lightning.......20%. * Max Temperature....... Valleys/lwr slopes...67-75 Ridges/upr slopes....55-63 * Min Humidity....... Valleys/lwr slopes...66-81 percent Ridges/upr slopes....59-73 percent * 20-Foot Winds... Valleys/lwr slopes...Southwest winds 5 to 8 mph. Ridges/upr slopes....Southwest winds 5 to 8 mph. * Mixing Height..........3900 ft AGL. * Chc of Wetting Rain....80 percent. .MONDAY NIGHT... * Sky/Weather............Slight chance of thunderstorms in the evening. Showers through the night. * Min Temperature....... Valleys/lwr slopes...52-55 Ridges/upr slopes....51-56 * Max Humidity....... Valleys/lwr slopes...88-98 percent Ridges/upr slopes....73-85 percent * 20-Foot Winds... Valleys/lwr slopes...Southwest winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. Ridges/upr slopes....Southwest winds 5 mph in the evening...becoming light winds 2 to 4 mph. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....70 percent. .TUESDAY... * Sky/Weather............Showers likely through the day. Slight chance of thunderstorms late in the afternoon. * Max Temperature....... Valleys/lwr slopes...67-75 Ridges/upr slopes....56-64 * Min Humidity....... Valleys/lwr slopes...68-83 percent Ridges/upr slopes....56-71 percent * 20-Foot Winds... Valleys/lwr slopes...Light winds 2 to 4 mph...becoming southwest 5 to 6 mph in the afternoon. Ridges/upr slopes....Southwest winds 5 to 7 mph. * Mixing Height..........3500 ft AGL. * Chc of Wetting Rain....60 percent. $$ CAZ211-212-081345- Hoopa-Van Duzen/Mad River- 1254 PM PDT Sun Sep 7 2025 .TONIGHT... * Sky/Weather............Mostly cloudy. Chance of rain late in the night. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...52-55 Ridges/upr slopes....46-54 * Max Humidity....... Valleys/lwr slopes...83-98 percent Ridges/upr slopes....75-90 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. Ridges/upr slopes....Southwest winds 5 to 6 mph...shifting to the south 5 mph after midnight. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....0 percent. .MONDAY... * Sky/Weather............Chance of rain early in the morning, then showers likely and slight chance of thunderstorms in the late morning and afternoon. * Chance Lightning.......20%. * Max Temperature....... Valleys/lwr slopes...68-76 Ridges/upr slopes....58-66 * Min Humidity....... Valleys/lwr slopes...57-72 percent Ridges/upr slopes....59-74 percent * 20-Foot Winds... Valleys/lwr slopes...Southeast winds 5 to 6 mph...shifting to the southwest in the afternoon. Ridges/upr slopes....South winds 5 to 8 mph. * Mixing Height..........4000 ft AGL. * Chc of Wetting Rain....70 percent. .MONDAY NIGHT... * Sky/Weather............Showers likely and slight chance of thunderstorms in the evening, then rain likely after midnight. * Min Temperature....... Valleys/lwr slopes...52-56 Ridges/upr slopes....48-56 * Max Humidity....... Valleys/lwr slopes...86-97 percent Ridges/upr slopes....78-93 percent * 20-Foot Winds... Valleys/lwr slopes...West winds 5 mph in the evening...becoming light winds 1 to 3 mph. Ridges/upr slopes....Southwest winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....50 percent. .TUESDAY... * Sky/Weather............Patchy fog in the morning. Rain likely until late afternoon. Showers likely and slight chance of thunderstorms late in the afternoon. * Max Temperature....... Valleys/lwr slopes...69-75 Ridges/upr slopes....59-67 * Min Humidity....... Valleys/lwr slopes...55-70 percent Ridges/upr slopes....59-74 percent * 20-Foot Winds... Valleys/lwr slopes...Light winds 2 to 5 mph...becoming northwest 5 to 10 mph in the afternoon. Ridges/upr slopes....Variable 2 to 5 mph...becoming west 5 to 8 mph in the afternoon. * Mixing Height..........3300 ft AGL. * Chc of Wetting Rain....60 percent. $$ CAZ283-081345- Trinity- 1254 PM PDT Sun Sep 7 2025 .TONIGHT... * Sky/Weather............Mostly cloudy. Chance of rain late in the night. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...51-55 Ridges/upr slopes....45-53 * Max Humidity....... Valleys/lwr slopes...74-89 percent Ridges/upr slopes....65-80 percent * 20-Foot Winds... Valleys/lwr slopes...Southwest winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. Ridges/upr slopes....South winds 5 to 7 mph. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....0 percent. .MONDAY... * Sky/Weather............Chance of rain in the morning, then showers likely and slight chance of thunderstorms in the afternoon. * Chance Lightning.......10% increasing to 30% in the afternoon. * Max Temperature....... Valleys/lwr slopes...70-75 Ridges/upr slopes....55-63 * Min Humidity....... Valleys/lwr slopes...46-56 percent Ridges/upr slopes....62-72 percent * 20-Foot Winds... Valleys/lwr slopes...East winds 5 to 6 mph...shifting to the south in the afternoon. Ridges/upr slopes....South winds 5 to 8 mph. * Mixing Height..........4700 ft AGL. * Chc of Wetting Rain....70 percent. .MONDAY NIGHT... * Sky/Weather............Showers likely and slight chance of thunderstorms in the evening, then rain likely after midnight. * Min Temperature....... Valleys/lwr slopes...50-53 Ridges/upr slopes....44-52 * Max Humidity....... Valleys/lwr slopes...85-95 percent Ridges/upr slopes....78-89 percent * 20-Foot Winds... Valleys/lwr slopes...Light winds 1 to 3 mph. Ridges/upr slopes....Southwest winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....40 percent. .TUESDAY... * Sky/Weather............Mostly cloudy. Rain likely until late afternoon, then showers likely and chance of thunderstorms late in the afternoon. * Max Temperature....... Valleys/lwr slopes...69-74 Ridges/upr slopes....55-63 * Min Humidity....... Valleys/lwr slopes...49-59 percent Ridges/upr slopes....65-80 percent * 20-Foot Winds... Valleys/lwr slopes...Light winds 2 to 4 mph...becoming southwest 5 to 8 mph in the afternoon. Ridges/upr slopes....Variable 2 to 5 mph...becoming west 5 to 8 mph in the afternoon. * Mixing Height..........3700 ft AGL. * Chc of Wetting Rain....70 percent. $$ CAZ276-081345- Interior Mendocino- 1254 PM PDT Sun Sep 7 2025 .TONIGHT... * Sky/Weather............Mostly cloudy then becoming partly cloudy then becoming mostly cloudy. Patchy fog late in the night. Chance of rain late in the night. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...48-56 Ridges/upr slopes....49-57 * Max Humidity....... Valleys/lwr slopes...82-97 percent Ridges/upr slopes....76-91 percent * 20-Foot Winds... Valleys/lwr slopes...West winds 5 to 7 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....West winds 5 to 7 mph in the evening...becoming downslope/downvalley 2 to 4 mph. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....0 percent. .MONDAY... * Sky/Weather............Patchy fog early in the morning. Chance of rain in the morning. Showers likely and slight chance of thunderstorms in the afternoon. * Chance Lightning.......20%. * Max Temperature....... Valleys/lwr slopes...69-77 Ridges/upr slopes....65-73 * Min Humidity....... Valleys/lwr slopes...58-73 percent Ridges/upr slopes....61-76 percent * 20-Foot Winds... Valleys/lwr slopes...South winds 5 to 8 mph. Ridges/upr slopes....Southwest winds 5 to 8 mph. * Mixing Height..........3800 ft AGL. * Chc of Wetting Rain....30 percent. .MONDAY NIGHT... * Sky/Weather............Mostly cloudy. Showers likely and slight chance of thunderstorms early in the evening, then rain likely in the late evening and overnight. * Min Temperature....... Valleys/lwr slopes...51-59 Ridges/upr slopes....52-60 * Max Humidity....... Valleys/lwr slopes...84-98 percent Ridges/upr slopes....78-93 percent * 20-Foot Winds... Valleys/lwr slopes...Southwest winds 5 to 7 mph in the evening...becoming light winds 2 to 4 mph. Ridges/upr slopes....South winds 5 to 7 mph. * Mixing Height..........100 ft AGL. * Chc of Wetting Rain....20 percent. .TUESDAY... * Sky/Weather............Mostly cloudy. Patchy fog in the morning. Chance of rain until late afternoon. Chance of showers and slight chance of thunderstorms late in the afternoon. * Max Temperature....... Valleys/lwr slopes...69-76 Ridges/upr slopes....65-72 * Min Humidity....... Valleys/lwr slopes...58-73 percent Ridges/upr slopes....60-75 percent * 20-Foot Winds... Valleys/lwr slopes...Light winds 3 to 6 mph...becoming west 5 to 12 mph in the afternoon. Ridges/upr slopes....West winds 5 to 11 mph. * Mixing Height..........3200 ft AGL. * Chc of Wetting Rain....20 percent. $$ CAZ277-081345- W Mendocino NF/E Mendocino Unit- 1254 PM PDT Sun Sep 7 2025 .TONIGHT... * Sky/Weather............Mostly cloudy then becoming partly cloudy. Chance of rain late in the night. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...46-54 Ridges/upr slopes....48-54 * Max Humidity....... Valleys/lwr slopes...77-92 percent Ridges/upr slopes....66-81 percent * 20-Foot Winds... Valleys/lwr slopes...West winds 5 to 6 mph in the evening...becoming downslope/downvalley 2 to 4 mph. Ridges/upr slopes....Southwest winds 5 to 7 mph. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....0 percent. .MONDAY... * Sky/Weather............Chance of rain in the morning, then showers likely and slight chance of thunderstorms in the afternoon. * Chance Lightning.......20%. * Max Temperature....... Valleys/lwr slopes...69-77 Ridges/upr slopes....59-67 * Min Humidity....... Valleys/lwr slopes...51-61 percent Ridges/upr slopes....54-64 percent * 20-Foot Winds... Valleys/lwr slopes...Southwest winds 5 to 8 mph. Ridges/upr slopes....Southwest winds 5 to 8 mph. * Mixing Height..........4500 ft AGL. * Chc of Wetting Rain....40 percent. .MONDAY NIGHT... * Sky/Weather............Mostly cloudy. Showers likely and slight chance of thunderstorms early in the evening, then chance of rain in the late evening and overnight. * Min Temperature....... Valleys/lwr slopes...48-56 Ridges/upr slopes....48-56 * Max Humidity....... Valleys/lwr slopes...81-96 percent Ridges/upr slopes....71-86 percent * 20-Foot Winds... Valleys/lwr slopes...Southwest winds 5 to 6 mph in the evening...becoming light winds 2 to 4 mph. Ridges/upr slopes....Southwest winds 5 to 8 mph. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....20 percent. .TUESDAY... * Sky/Weather............Mostly cloudy. Patchy fog early in the morning. Rain likely until late afternoon. Showers likely and slight chance of thunderstorms late in the afternoon. * Max Temperature....... Valleys/lwr slopes...71-76 Ridges/upr slopes....60-68 * Min Humidity....... Valleys/lwr slopes...50-60 percent Ridges/upr slopes....55-70 percent * 20-Foot Winds... Valleys/lwr slopes...Light winds 2 to 4 mph...becoming west 5 to 9 mph in the afternoon. Ridges/upr slopes....Variable 2 to 5 mph...becoming west 5 to 8 mph in the afternoon. * Mixing Height..........4200 ft AGL. * Chc of Wetting Rain....50 percent. $$ CAZ264-081345- Lake County Portion of Lake/Napa/Sonoma RU- 1254 PM PDT Sun Sep 7 2025 .TONIGHT... * Sky/Weather............Mostly cloudy then becoming partly cloudy. * Chance Lightning.......0%. * Min Temperature....... Valleys/lwr slopes...around 50 Ridges/upr slopes....56-59 * Max Humidity....... Valleys/lwr slopes...91 percent Ridges/upr slopes....64-79 percent * 20-Foot Winds... Valleys/lwr slopes...Northwest winds 5 to 8 mph. Ridges/upr slopes....West winds 5 to 8 mph. * Mixing Height..........0 ft AGL. * Chc of Wetting Rain....0 percent. .MONDAY... * Sky/Weather............Partly cloudy then becoming mostly cloudy. Slight chance of rain early in the morning. Chance of rain in the late morning and afternoon. * Chance Lightning.......10%. * Max Temperature....... Valleys/lwr slopes...around 71 Ridges/upr slopes....64-69 * Min Humidity....... Valleys/lwr slopes...57 percent Ridges/upr slopes....57-67 percent * 20-Foot Winds... Valleys/lwr slopes...West winds 5 to 8 mph. Ridges/upr slopes....West winds 5 to 11 mph. * Mixing Height..........4600 ft AGL. * Chc of Wetting Rain....10 percent. .MONDAY NIGHT... * Sky/Weather............Mostly cloudy. Chance of rain. * Min Temperature....... Valleys/lwr slopes...around 52 Ridges/upr slopes....56-61 * Max Humidity....... Valleys/lwr slopes...87 percent Ridges/upr slopes....69-79 percent * 20-Foot Winds... Valleys/lwr slopes...West winds 5 to 7 mph in the evening...becoming light winds 2 to 5 mph. Ridges/upr slopes....West winds 5 to 11 mph. * Mixing Height..........200 ft AGL. * Chc of Wetting Rain....0 percent. .TUESDAY... * Sky/Weather............Mostly cloudy. Chance of rain. * Max Temperature....... Valleys/lwr slopes...around 72 Ridges/upr slopes....66-70 * Min Humidity....... Valleys/lwr slopes...57 percent Ridges/upr slopes....51-60 percent * 20-Foot Winds... Valleys/lwr slopes...West winds 5 to 10 mph. Ridges/upr slopes....West winds 5 to 10 mph. * Mixing Height..........4400 ft AGL. * Chc of Wetting Rain....10 percent. $$ .EXTENDED FORECAST FOR DAYS 3 THROUGH 5... ...Northwest California Coast... .WEDNESDAY...Mostly cloudy with chance of rain. Patchy fog. Lows in the lower to mid 50s. Highs 61 to 66. Northwest winds 5 mph. .THURSDAY...Mostly cloudy with slight chance of rain. Patchy fog. Lows in the lower to mid 50s. Highs 61 to 66. Northwest winds 5 mph. .FRIDAY...Mostly cloudy. Patchy fog. Lows in the lower to mid 50s. Highs 62 to 68. North winds 5 mph. ...Northwest California Interior... .WEDNESDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows 49 to 57. Highs 71 to 80. Northwest winds 5 mph. .THURSDAY...Partly cloudy with slight chance of rain. Patchy fog in the morning. Lows 49 to 57. Highs 72 to 82. Northwest winds 5 mph. .FRIDAY...Mostly clear. Patchy fog in the morning. Lows 50 to 58. Highs 76 to 87. Northwest winds 5 mph. .6 to 10 DAY OUTLOOK...Saturday September 13 THROUGH Wednesday September 17, 2025... FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION. $$ visit us at www.weather.gov/eureka