Zone Forecast Product
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
997
FPUS56 KEKA 202037
ZFPEKA
Zone Forecast Product for California
National Weather Service Eureka CA
136 PM PDT Thu Aug 20 2026
This is an average forecast over a large and geographically diverse
area. For a specific forecast for your location...please refer to
the point and click forecast on our webpage at:
www.weather.gov/eureka.
Spot temperatures and probabilities of measurable precipitation
are for tonight, Friday, Friday night, and Saturday.
CAZ101-211400-
Coastal Del Norte-
Including the cities of Ft Dick, Crescent City, and Smith River
136 PM PDT Thu Aug 20 2026
.TONIGHT...Mostly cloudy. Patchy fog. Lows 47 to 57. Northwest
wind around 5 mph in the evening becoming light.
.FRIDAY...Cloudy. Areas of fog in the morning. Highs 59 to 69.
Light winds becoming southwest around 5 mph in the afternoon.
.FRIDAY NIGHT...Cloudy. Patchy fog in the evening, then areas of
fog overnight. Lows 46 to 56. Southwest wind around 5 mph in the
evening becoming light.
.SATURDAY...Mostly cloudy. Patchy fog. Highs 59 to 69. Southwest
wind around 5 mph.
.SATURDAY NIGHT...Mostly cloudy. Patchy fog. Lows 46 to 56. North
wind around 5 mph.
.SUNDAY...Partly cloudy. Patchy fog. Highs 64 to 77. North wind
around 10 mph.
.SUNDAY NIGHT...Mostly clear in the evening then becoming mostly
cloudy. Patchy fog. Lows 49 to 59.
.MONDAY AND MONDAY NIGHT...Mostly cloudy. Patchy fog. Highs 62 to
72. Lows 47 to 57.
.TUESDAY...Mostly cloudy. Areas of fog. Highs 61 to 71.
.TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. Patchy fog. Lows
47 to 57. Highs 61 to 71.
.WEDNESDAY NIGHT...Partly cloudy in the evening then becoming
mostly cloudy. Patchy fog. Lows 47 to 57.
.THURSDAY...Mostly cloudy. Patchy fog. Highs 61 to 71.
&&
TEMPERATURE / PRECIPITATION
Crescent City 53 61 52 62 / 10 0 0 0
Klamath 52 63 51 63 / 0 0 0 0
$$
CAZ102-211400-
Interior Del Norte-
Including the city of Gasquet
136 PM PDT Thu Aug 20 2026
.TONIGHT...Partly cloudy early in the evening then becoming
mostly cloudy. Patchy valley fog overnight. Lows 52 to 62.
.FRIDAY...Mostly cloudy. Patchy valley fog in the morning. Highs
67 to 82.
.FRIDAY NIGHT...Partly cloudy. Patchy valley fog. Lows 45 to 55.
.SATURDAY...Mostly sunny. Highs 63 to 78.
.SATURDAY NIGHT...Mostly clear. Patchy valley fog. Lows 45 to 55.
.SUNDAY...Sunny. Highs 72 to 87.
.SUNDAY NIGHT...Mostly clear. Lows 53 to 63.
.MONDAY THROUGH TUESDAY...Partly cloudy. Highs 73 to 88. Lows
52 to 62.
.TUESDAY NIGHT...Partly cloudy. Patchy valley fog. Lows 49 to 59.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy. Highs 70 to 85. Lows
49 to 59.
&&
TEMPERATURE / PRECIPITATION
Gasquet 51 75 48 74 / 0 0 0 0
$$
CAZ103-211400-
Northern Coastal Humboldt-
Including the cities of Eureka, Samoa, Arcata, Arcata Arpt,
Fieldbrook, Fernbridge, and Fortuna
136 PM PDT Thu Aug 20 2026
.TONIGHT...Mostly cloudy. Patchy fog. Lows 49 to 59. Northwest
wind around 10 mph.
.FRIDAY...Mostly cloudy. Areas of fog in the morning. Highs 61 to
71. Light winds becoming northwest around 10 mph in the
afternoon.
.FRIDAY NIGHT...Mostly cloudy. Patchy fog through the night. Lows
47 to 57. Northwest wind around 5 mph in the evening becoming
light.
.SATURDAY...Mostly cloudy. Patchy fog. Highs 62 to 72. Northwest
wind around 10 mph.
.SATURDAY NIGHT...Mostly cloudy. Patchy fog. Lows 48 to 58. North
wind around 10 mph.
.SUNDAY...Mostly cloudy. Highs 62 to 75. North wind around
10 mph.
.SUNDAY NIGHT...Partly cloudy in the evening then becoming mostly
cloudy. Patchy fog. Lows 49 to 59.
.MONDAY...Mostly cloudy. Highs 62 to 77.
.MONDAY NIGHT THROUGH THURSDAY...Mostly cloudy. Patchy fog. Lows
48 to 58. Highs 62 to 77.
&&
TEMPERATURE / PRECIPITATION
McKinleyville 53 61 51 62 / 0 0 0 0
Arcata 54 64 53 64 / 0 0 0 0
Eureka 55 63 54 63 / 0 0 0 0
Fortuna 55 66 53 66 / 0 0 0 0
$$
CAZ104-211400-
Southwestern Humboldt-
Including the cities of Honeydew, Petrolia, Briceland,
Ettersburg, Shelter Cove, and Whitethorn
136 PM PDT Thu Aug 20 2026
.TONIGHT...Mostly cloudy. Lows 50 to 60. North wind around
10 mph.
.FRIDAY...Cloudy in the morning then clearing. Patchy fog in the
morning. Highs 67 to 82. Light winds becoming west around 5 mph
in the afternoon.
.FRIDAY NIGHT...Partly cloudy. Patchy fog overnight. Lows 47 to
57. Northwest wind around 5 mph shifting to the north overnight.
.SATURDAY...Mostly sunny. Patchy fog. Highs 70 to 85. North wind
around 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows 49 to 59. North wind around
15 mph.
.SUNDAY...Mostly sunny. Highs 76 to 91. North wind around 15 mph.
.SUNDAY NIGHT THROUGH THURSDAY...Partly cloudy. Lows 51 to 61.
Highs 76 to 91.
&&
TEMPERATURE / PRECIPITATION
Honeydew 52 75 50 77 / 0 0 0 0
$$
CAZ105-211400-
Northeastern Interior Humboldt-
Including the cities of Hoopa, Orleans, Weitchpec,
and Willow Creek
136 PM PDT Thu Aug 20 2026
.TONIGHT...Mostly cloudy. Patchy smoke in the evening. Patchy
valley fog overnight. Lows 52 to 62.
.FRIDAY...Mostly cloudy. Patchy valley fog in the morning. Highs
77 to 92.
.FRIDAY NIGHT...Partly cloudy. Patchy valley fog overnight. Lows
47 to 57.
.SATURDAY...Mostly sunny. Patchy valley fog. Highs 75 to 90.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 46 to 56. Highs
84 to 99.
.SUNDAY NIGHT...Mostly clear. Lows 52 to 62.
.MONDAY...Mostly sunny. Highs 84 to 99.
.MONDAY NIGHT...Mostly clear. Lows 50 to 60.
.TUESDAY...Partly cloudy in the morning then clearing. Highs
82 to 97.
.TUESDAY NIGHT...Partly cloudy. Patchy valley fog. Lows 49 to 59.
.WEDNESDAY...Partly cloudy in the morning then clearing. Highs
81 to 96.
.WEDNESDAY NIGHT...Partly cloudy. Patchy valley fog. Lows 49 to
59.
.THURSDAY...Mostly sunny. Highs 80 to 95.
&&
TEMPERATURE / PRECIPITATION
Orleans 58 90 52 88 / 0 0 0 0
Hoopa 57 87 53 85 / 0 0 0 0
Willow Creek 57 91 53 88 / 0 0 0 0
$$
CAZ106-211400-
Southeastern Interior Humboldt-
Including the cities of Bull Creek, Pepperwood, Shively,
Dinsmore, Bridgeville, Alderpoint, and Benbow
136 PM PDT Thu Aug 20 2026
.TONIGHT...Mostly cloudy. Lows 51 to 61.
.FRIDAY...Cloudy in the morning then becoming partly cloudy.
Patchy valley fog in the morning. Highs 71 to 86.
.FRIDAY NIGHT...Partly cloudy. Patchy valley fog. Lows 46 to 56.
.SATURDAY...Sunny. Patchy valley fog. Highs 73 to 88.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 45 to 55. Highs
78 to 93.
.SUNDAY NIGHT THROUGH THURSDAY...Partly cloudy. Lows 50 to 60.
Highs 78 to 93.
&&
TEMPERATURE / PRECIPITATION
Garberville 53 83 50 85 / 0 0 0 0
$$
CAZ108-211400-
Southern Trinity-
Including the cities of Forest Glen, Hayfork, Hyampom, Peanut,
Ruth, and Zenia
136 PM PDT Thu Aug 20 2026
.TONIGHT...Cloudy. Lows 54 to 64.
.FRIDAY...Mostly cloudy. Highs 77 to 92.
.FRIDAY NIGHT...Mostly clear. Lows 46 to 56.
.SATURDAY...Sunny. Highs 75 to 90.
.SATURDAY NIGHT...Clear. Lows 46 to 56.
.SUNDAY...Sunny. Highs 81 to 96.
.SUNDAY NIGHT...Mostly clear. Lows 51 to 61.
.MONDAY...Partly cloudy in the morning then clearing. Highs 81 to
96.
.MONDAY NIGHT...Mostly clear. Lows 49 to 59.
.TUESDAY...Mostly sunny. Highs 80 to 95.
.TUESDAY NIGHT...Mostly clear. Lows 49 to 59.
.WEDNESDAY...Mostly sunny. Highs 80 to 95.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 49 to 59.
Highs 80 to 95.
&&
TEMPERATURE / PRECIPITATION
Hayfork 53 92 46 90 / 0 0 0 0
Ruth 52 85 44 84 / 0 0 0 0
$$
CAZ109-211400-
Coastal Mendocino-
Including the cities of Fort Bragg and Rockport
136 PM PDT Thu Aug 20 2026
.TONIGHT...Cloudy. Patchy fog overnight. Lows 46 to 56. Northwest
wind around 10 mph.
.FRIDAY...Mostly cloudy. Patchy fog in the morning. Highs 58 to
73. Northwest wind around 10 mph.
.FRIDAY NIGHT...Partly cloudy in the evening then becoming mostly
cloudy. Patchy fog. Lows 45 to 55. Northwest wind around 5 mph.
.SATURDAY...Mostly sunny. Patchy fog. Highs 64 to 79. Northwest
wind around 10 mph.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Patchy fog. Lows
46 to 56. Highs 71 to 86. Northwest wind around 10 mph.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Patchy fog. Lows 47 to
57. Highs 71 to 86.
.MONDAY NIGHT...Partly cloudy in the evening then becoming mostly
cloudy. Areas of fog. Lows 46 to 56.
.TUESDAY...Mostly cloudy in the morning then becoming partly
cloudy. Patchy fog. Highs 66 to 81.
.TUESDAY NIGHT THROUGH THURSDAY...Partly cloudy. Patchy fog. Lows
47 to 57. Highs 70 to 85.
&&
TEMPERATURE / PRECIPITATION
Fort Bragg 51 64 50 65 / 10 0 10 0
Point Arena 51 58 51 59 / 0 0 0 0
$$
CAZ110-211400-
Northwestern Interior Mendocino-
Including the cities of Potter Valley and Willits
136 PM PDT Thu Aug 20 2026
.TONIGHT...Cloudy. Lows 50 to 60.
.FRIDAY...Mostly cloudy. Patchy valley fog in the morning. Highs
77 to 92.
.FRIDAY NIGHT...Mostly clear. Patchy valley fog overnight. Lows
46 to 56.
.SATURDAY...Sunny. Highs 77 to 92.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 47 to 57. Highs
83 to 98.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows 51 to 61. Highs
83 to 98.
.MONDAY NIGHT...Mostly clear. Lows 49 to 59.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 82 to 97. Lows
50 to 60.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 50 to 60.
Highs 82 to 97.
&&
TEMPERATURE / PRECIPITATION
Leggett 52 75 50 78 / 0 0 0 0
Laytonville 53 80 50 81 / 0 0 0 0
Willits 51 77 48 78 / 0 0 0 0
$$
CAZ111-211400-
Northeastern Interior Mendocino-
Including the city of Covelo
136 PM PDT Thu Aug 20 2026
.TONIGHT...Cloudy. Lows 56 to 66.
.FRIDAY...Mostly cloudy. Highs 81 to 96.
.FRIDAY NIGHT...Mostly clear. Lows 48 to 58.
.SATURDAY...Sunny. Highs 80 to 95.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 50 to 60. Highs
85 to 100.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows 53 to 63. Highs
85 to 100.
.MONDAY NIGHT...Mostly clear. Lows 51 to 61.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 85 to 100. Lows
52 to 62.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 52 to 62.
Highs 85 to 100.
&&
TEMPERATURE / PRECIPITATION
Covelo 56 87 51 87 / 0 0 0 0
$$
CAZ112-211400-
Southwestern Interior Mendocino-
Including the cities of Boonville, Philo, Comptche, and Yorkville
136 PM PDT Thu Aug 20 2026
.TONIGHT...Cloudy. Patchy valley fog overnight. Lows 48 to 58.
.FRIDAY...Mostly cloudy in the morning then becoming partly
cloudy. Patchy valley fog in the morning. Highs 69 to 84.
.FRIDAY NIGHT...Partly cloudy in the evening then becoming mostly
cloudy. Patchy valley fog overnight. Lows 46 to 56.
.SATURDAY...Mostly sunny. Patchy valley fog. Highs 70 to 85.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Patchy valley fog.
Lows 48 to 58. Highs 76 to 91.
.SUNDAY NIGHT THROUGH THURSDAY...Partly cloudy. Patchy valley
fog. Lows 49 to 59. Highs 76 to 91.
&&
TEMPERATURE / PRECIPITATION
Boonville 52 79 49 80 / 0 0 0 0
$$
CAZ113-211400-
Southeastern Interior Mendocino-
Including the cities of Calpella, Hopland, Redwood Valley,
Talmage, and Ukiah
136 PM PDT Thu Aug 20 2026
.TONIGHT...Cloudy. Lows 54 to 64.
.FRIDAY...Mostly cloudy. Highs 72 to 87.
.FRIDAY NIGHT...Mostly clear. Lows 49 to 59.
.SATURDAY...Sunny. Highs 73 to 87.
.SATURDAY NIGHT...Partly cloudy. Lows 51 to 61.
.SUNDAY...Sunny. Highs 79 to 94.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows 55 to 65. Highs
79 to 94.
.MONDAY NIGHT...Mostly clear. Lows 52 to 62.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 79 to 94. Lows
53 to 63.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 54 to 64.
Highs 79 to 94.
&&
TEMPERATURE / PRECIPITATION
Ukiah 57 85 55 85 / 0 0 0 0
$$
CAZ114-211400-
Northern Lake-
Including the city of Gravelly Valley Airport
136 PM PDT Thu Aug 20 2026
.TONIGHT...Cloudy. Lows 57 to 67.
.FRIDAY...Mostly cloudy. Highs 78 to 93.
.FRIDAY NIGHT...Mostly clear. Lows 49 to 59.
.SATURDAY...Sunny. Highs 77 to 92.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 51 to 61. Highs
82 to 97.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows 54 to 64. Highs
82 to 97.
.MONDAY NIGHT...Mostly clear. Lows 52 to 62.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 82 to 97. Lows
53 to 63.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 53 to 63.
Highs 82 to 97.
&&
TEMPERATURE / PRECIPITATION
Lake Pillsbury 51 92 45 91 / 0 0 0 0
$$
CAZ116-211400-
Northwestern and Central Trinity-
Including the cities of Weaverville, Douglas City, Helena,
Junction City, Big Bar, Del Loma, and Burnt Ranch
136 PM PDT Thu Aug 20 2026
.TONIGHT...Cloudy. Lows 58 to 68. Southwest wind around 10 mph
shifting to the east overnight.
.FRIDAY...Mostly cloudy. Slight chance of rain in the afternoon.
Highs 86 to 101. Southeast wind up to 10 mph.
.FRIDAY NIGHT...Mostly clear. Slight chance of rain in the
evening. Lows 50 to 60. West wind around 10 mph.
.SATURDAY...Sunny. Highs 81 to 96. West wind around 10 mph.
.SATURDAY NIGHT...Clear. Lows 49 to 59. Northwest wind around
10 mph.
.SUNDAY...Sunny. Highs 88 to 103. East wind around 10 mph.
.SUNDAY NIGHT...Mostly clear. Lows 54 to 64.
.MONDAY...Mostly sunny. Highs 88 to 103.
.MONDAY NIGHT THROUGH TUESDAY NIGHT...Mostly clear. Lows 52 to
62. Highs 88 to 103.
.WEDNESDAY...Mostly sunny. Highs 86 to 101.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 51 to 61.
Highs 86 to 101.
&&
TEMPERATURE / PRECIPITATION
Big Bar 60 96 53 92 / 0 20 0 0
Weaverville 60 92 54 90 / 0 20 20 0
$$
CAZ117-211400-
Northeastern Trinity-
Including the cities of Carrville and Trinity Center
136 PM PDT Thu Aug 20 2026
.TONIGHT...Cloudy. Lows 56 to 66. Southeast wind around 10 mph.
.FRIDAY...Mostly cloudy. Slight chance of rain in the afternoon.
Highs 78 to 93. Southeast wind 5 to 15 mph.
.FRIDAY NIGHT...Partly cloudy in the evening then becoming clear.
Slight chance of rain in the evening. Lows 49 to 59. South wind
around 10 mph.
.SATURDAY...Sunny. Highs 77 to 92. Southwest wind around 10 mph.
.SATURDAY NIGHT AND SUNDAY...Clear. Lows 48 to 58. Highs 80 to
95. East wind around 10 mph.
.SUNDAY NIGHT...Mostly clear. Lows 52 to 62.
.MONDAY...Mostly sunny. Highs 79 to 94.
.MONDAY NIGHT THROUGH TUESDAY NIGHT...Mostly clear. Lows 50 to
60. Highs 79 to 94.
.WEDNESDAY...Mostly sunny. Highs 81 to 96.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 50 to 60.
Highs 81 to 96.
&&
TEMPERATURE / PRECIPITATION
Trinity Center 60 91 55 90 / 0 20 20 0
$$
CAZ118-211400-
Western Lake-
Including the cities of Finley, Knobcone Camp, Lakeport,
Soda Bay, Lucerne, Nice, and Saratoga Springs
136 PM PDT Thu Aug 20 2026
.TONIGHT...Cloudy. Lows 57 to 67. West wind around 10 mph.
.FRIDAY...Mostly cloudy. Highs 79 to 89. West wind around 10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 49 to 59. Northwest wind up to
10 mph.
.SATURDAY...Sunny. Highs 78 to 88. West wind around 10 mph.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 52 to 62. Highs
79 to 94. Southeast wind around 10 mph.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows 56 to 66. Highs
82 to 94.
.MONDAY NIGHT...Mostly clear. Lows 54 to 64.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 82 to 94. Lows
55 to 65.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 55 to 65.
Highs 82 to 94.
&&
TEMPERATURE / PRECIPITATION
Lakeport 58 83 53 84 / 0 0 0 0
$$
CAZ119-211400-
Southwestern Lake-
Including the cities of Kelseyville, Mount Konocti, Adams,
Anderson Springs, Cobb, Ettawa Springs, and Forest Lake
136 PM PDT Thu Aug 20 2026
.TONIGHT...Mostly cloudy. Lows 59 to 69. West wind around 10 mph.
.FRIDAY...Partly cloudy in the morning then becoming mostly
cloudy. Highs 77 to 89. Southwest wind around 10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 53 to 63. West wind around
10 mph.
.SATURDAY...Sunny. Highs 78 to 90. West wind around 10 mph.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 55 to 65. Highs
78 to 91. East wind around 10 mph.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows 56 to 66. Highs
77 to 91.
.MONDAY NIGHT...Mostly clear. Lows 54 to 64.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 78 to 93. Lows
56 to 66.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 58 to 68.
Highs 81 to 93.
$$
CAZ120-211400-
Eastern Lake-
Including the cities of Clearlake, Clearlake Park,
Hidden Valley Lake, and Middletown
136 PM PDT Thu Aug 20 2026
.TONIGHT...Mostly cloudy. Lows 57 to 67. West wind around 10 mph.
.FRIDAY...Mostly sunny in the morning then becoming mostly
cloudy. Highs 84 to 94. Southwest wind around 10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 52 to 62. West wind up to
10 mph.
.SATURDAY...Sunny. Highs 83 to 93. West wind around 10 mph.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 54 to 64. Highs
83 to 95. Northeast wind around 10 mph.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows 56 to 66. Highs
84 to 95.
.MONDAY NIGHT...Mostly clear. Lows 53 to 63.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 85 to 96. Lows
54 to 64.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 56 to 66.
Highs 86 to 96.
&&
TEMPERATURE / PRECIPITATION
Middletown 55 88 51 89 / 0 0 0 0
Clearlake 59 89 54 89 / 0 0 0 0
$$