Zone Forecast Product
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
964 FPUS55 KBOU 190006 ZFPBOU Zone Forecast Product for Northeast Colorado National Weather Service Denver/Boulder CO 605 PM MDT Fri Sep 18 2026 COZ038>040-191200- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, and Parker 605 PM MDT Fri Sep 18 2026 .TONIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms early in the evening, then mostly cloudy overnight. Lows in the lower to mid 50s. Chance of rain 40 percent. .SATURDAY...Partly cloudy with a slight chance of showers in the morning, then showers likely and chance of thunderstorms in the afternoon. Highs 71 to 77. Chance of rain 70 percent. .SATURDAY NIGHT...Mostly cloudy. Chance of thunderstorms in the evening. Lows 46 to 52. Chance of precipitation 50 percent. .SUNDAY...Showers likely and chance of thunderstorms. Highs near 70. Chance of rain 60 percent. .SUNDAY NIGHT...Partly cloudy with a 30 percent chance of showers. Lows 44 to 50. .MONDAY...Mostly sunny. Highs 68 to 74. .MONDAY NIGHT...Partly cloudy. Lows 46 to 52. .TUESDAY...Partly cloudy with a 10 percent chance of thunderstorms. Highs 72 to 78. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows 49 to 55. Chance of rain 40 percent. .WEDNESDAY...Mostly cloudy with a 20 percent chance of thunderstorms. Highs in the mid to upper 70s. .WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of showers. Lows 49 to 55. .THURSDAY...Partly cloudy. Highs in the mid to upper 70s. .THURSDAY NIGHT...Mostly cloudy with a 20 percent chance of showers. Lows 50 to 56. .FRIDAY...Partly cloudy with a 10 percent chance of thunderstorms. Highs in the mid 70s to lower 80s. $$ COZ041-191200- Elbert/Central and East Douglas Counties Above 6000 Feet- Including Castle Rock, Elbert, Fondis, Kiowa, and Larkspur 605 PM MDT Fri Sep 18 2026 .TONIGHT...Mostly cloudy with a chance of thunderstorms early in the evening, then mostly cloudy overnight. Lows near 50. Chance of precipitation 50 percent. .SATURDAY...Mostly sunny in the morning, then showers likely and chance of thunderstorms in the afternoon. Highs in the lower to mid 70s. Chance of rain 60 percent. .SATURDAY NIGHT...Mostly cloudy. Chance of thunderstorms in the evening. Lows in the mid 40s to lower 50s. Chance of precipitation 50 percent. .SUNDAY...Showers likely and chance of thunderstorms. Highs in the mid 60s to lower 70s. Chance of rain 70 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows in the mid to upper 40s. Chance of rain 40 percent. .MONDAY...Partly cloudy. Highs near 70. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows near 50. .TUESDAY...Partly cloudy with a 10 percent chance of thunderstorms. Highs 69 to 75. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows near 50. Chance of rain 30 percent. .WEDNESDAY THROUGH THURSDAY...Mostly cloudy with a 20 percent chance of thunderstorms. Highs in the lower to mid 70s. Lows near 50. .THURSDAY NIGHT...Mostly cloudy with a 20 percent chance of showers. Lows in the lower to mid 50s. .FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 71 to 77. $$ COZ042>045-191200- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- Including Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, Roggen, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 605 PM MDT Fri Sep 18 2026 .TONIGHT...Mostly cloudy with a chance of thunderstorms early in the evening, then mostly cloudy with a slight chance of thunderstorms during the late evening hours. Partly cloudy after midnight. Lows in the lower to mid 50s. Chance of precipitation 50 percent. .SATURDAY...Partly cloudy in the morning, then showers and chance of thunderstorms in the afternoon. Highs in the mid to upper 70s. .SATURDAY NIGHT...Mostly cloudy. Chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows near 50. Chance of rain 50 percent. .SUNDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs near 70. .SUNDAY NIGHT...Partly cloudy with a chance of showers and slight chance of thunderstorms. Lows in the mid to upper 40s. Chance of rain 30 percent. .MONDAY...Partly cloudy. Highs near 70. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 47 to 53. .TUESDAY...Partly cloudy. Highs in the mid to upper 70s. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows 50 to 56. Chance of rain 30 percent. .WEDNESDAY...Mostly cloudy. Highs in the upper 70s. .WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows in the lower to mid 50s. .THURSDAY...Partly cloudy. Highs in the upper 70s. .THURSDAY NIGHT...Mostly cloudy with a 20 percent chance of showers. Lows in the lower to mid 50s. .FRIDAY...Partly cloudy. Highs in the upper 70s. $$ COZ046-047-191200- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Including Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, and Punkin Center 605 PM MDT Fri Sep 18 2026 .TONIGHT...Mostly cloudy with a chance of thunderstorms early in the evening, then mostly cloudy with a slight chance of showers during the late evening hours. Partly cloudy after midnight. Lows in the lower to mid 50s. North winds 10 to 15 mph with gusts up to 20 mph in the evening, becoming light. Chance of rain 50 percent. .SATURDAY...Partly cloudy in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 75 to 81. Chance of precipitation 40 percent. .SATURDAY NIGHT...Mostly cloudy. Chance of thunderstorms in the evening, then a slight chance of thunderstorms after midnight. Lows near 50. Northeast winds 10 to 15 mph in the evening, becoming light. Chance of precipitation 50 percent. .SUNDAY...Showers likely and chance of thunderstorms. Highs near 70. Chance of rain 70 percent. .SUNDAY NIGHT...Showers likely and chance of thunderstorms. Lows in the mid 40s to lower 50s. Chance of rain 70 percent. .MONDAY...Partly cloudy with a 10 percent chance of showers. Highs in the upper 60s. .MONDAY NIGHT...Partly cloudy with a chance of showers and slight chance of thunderstorms. Lows near 50. Chance of rain 50 percent. .TUESDAY...Partly cloudy with a 20 percent chance of showers. Highs near 70. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows in the lower to mid 50s. Chance of rain 30 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Highs in the lower 70s. Lows in the lower to mid 50s. .THURSDAY...Mostly cloudy with a 10 percent chance of showers. Highs in the mid 70s. .THURSDAY NIGHT...Mostly cloudy with a 20 percent chance of showers. Lows in the lower to mid 50s. .FRIDAY...Mostly cloudy with a 10 percent chance of showers. Highs in the mid 70s. $$ COZ048>051-191200- Logan County-Washington County-Sedgwick County-Phillips County- Including Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 605 PM MDT Fri Sep 18 2026 .TONIGHT...Showers likely and chance of thunderstorms early in the evening, then a chance of showers and slight chance of thunderstorms in the late evening and early morning. Lows in the upper 50s. Chance of rain 70 percent. .SATURDAY...Partly cloudy in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs in the mid to upper 70s. Chance of precipitation 40 percent. .SATURDAY NIGHT...Showers with thunderstorms likely in the evening, then a chance of showers after midnight. Lows in the lower 50s. .SUNDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs near 70. .SUNDAY NIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows in the upper 40s. Chance of rain 50 percent. .MONDAY...Partly cloudy. Highs near 70. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows around 50. .TUESDAY...Mostly cloudy. Highs 67 to 75. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows in the mid 50s. Chance of rain 40 percent. .WEDNESDAY...Mostly cloudy with a 10 percent chance of thunderstorms. Highs 73 to 79. .WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows in the mid 50s. .THURSDAY...Mostly cloudy. Highs in the mid to upper 70s. .THURSDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows in the mid 50s. .FRIDAY...Partly cloudy. Highs in the mid to upper 70s. $$ COZ035-191200- Larimer and Boulder Counties Between 6000 and 9000 Feet- Including Estes Park, Glendevey, Nederland, and Red Feather Lakes 605 PM MDT Fri Sep 18 2026 .TONIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms early in the evening, then partly cloudy overnight. Lows 42 to 52. Chance of rain 30 percent. .SATURDAY...Partly cloudy with a slight chance of showers in the morning, then showers likely and chance of thunderstorms in the afternoon. Highs 62 to 70. Chance of rain 70 percent. .SATURDAY NIGHT...Partly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then a slight chance of rain showers after midnight. Lows 39 to 49. Chance of rain 40 percent. .SUNDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 57 to 67. .SUNDAY NIGHT...Partly cloudy with a 10 percent chance of rain showers. Lows 36 to 46. .MONDAY...Mostly sunny. Highs 60 to 68. .MONDAY NIGHT...Partly cloudy. Lows 39 to 49. .TUESDAY...Partly cloudy with a chance of rain showers and slight chance of thunderstorms. Highs 64 to 72. Chance of rain 30 percent. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows 42 to 52. .WEDNESDAY...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Highs 64 to 72. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of rain showers. Lows 42 to 52. .THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 64 to 72. .THURSDAY NIGHT...Mostly cloudy with a 20 percent chance of showers. Lows 43 to 53. .FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 65 to 73. $$ COZ036-191200- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 605 PM MDT Fri Sep 18 2026 .TONIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms early in the evening, then partly cloudy overnight. Lows 42 to 52. Chance of rain 30 percent. .SATURDAY...Mostly sunny in the morning, then showers likely and chance of thunderstorms in the afternoon. Highs 64 to 74. Chance of rain 70 percent. .SATURDAY NIGHT...Partly cloudy. Chance of showers and slight chance of thunderstorms in the evening. Lows 40 to 50. Chance of rain 40 percent. .SUNDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs 60 to 70. .SUNDAY NIGHT...Partly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 39 to 49. Chance of rain 30 percent. .MONDAY...Mostly sunny. Highs 61 to 71. .MONDAY NIGHT...Partly cloudy. Lows 41 to 51. .TUESDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs 65 to 75. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows 42 to 52. Chance of rain 30 percent. .WEDNESDAY...Mostly cloudy with a 30 percent chance of thunderstorms. Highs 64 to 74. .WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows 43 to 53. .THURSDAY...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Highs 63 to 73. Chance of rain 30 percent. .THURSDAY NIGHT...Mostly cloudy with a 30 percent chance of showers. Lows 43 to 53. .FRIDAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs 66 to 76. Chance of rain 30 percent. $$ COZ030-032-191200- Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- Including Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 605 PM MDT Fri Sep 18 2026 .TONIGHT...Mostly cloudy. Slight chance of thunderstorms early in the evening, then a chance of showers overnight. Lows 34 to 44. Chance of rain 30 percent. .SATURDAY...Mostly cloudy. Chance of rain showers in the morning, then a chance of thunderstorms in the afternoon. Highs 61 to 67. Southwest winds 10 to 15 mph with gusts up to 20 mph in the afternoon. Chance of rain 50 percent. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Slight chance of thunderstorms in the evening. Chance of rain showers. Lows 29 to 39. Chance of rain 40 percent. .SUNDAY...Mostly cloudy with a 30 percent chance of rain showers. Highs 57 to 63. .SUNDAY NIGHT...Mostly clear. Lows 27 to 35. .MONDAY AND MONDAY NIGHT...Mostly clear. Highs 63 to 69. Lows 29 to 39. .TUESDAY...Partly cloudy. Highs 65 to 71. .TUESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 31 to 41. .WEDNESDAY...Mostly cloudy with a 20 percent chance of thunderstorms. Highs 63 to 69. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows 30 to 40. Highs 66 to 72. .THURSDAY NIGHT...Mostly cloudy. Lows 32 to 42. .FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 66 to 72. $$ COZ037-191200- Central and Southeast Park County- Including Fairplay, Hartsel, Lake George, and South Park 605 PM MDT Fri Sep 18 2026 .TONIGHT...Mostly cloudy with a slight chance of thunderstorms early in the evening, then partly cloudy overnight. Lows 39 to 47. Chance of precipitation 20 percent. .SATURDAY...Mostly sunny in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 63 to 69. Southwest winds 10 to 15 mph with gusts up to 20 mph in the afternoon. Chance of precipitation 40 percent. .SATURDAY NIGHT...Mostly clear. Lows 34 to 42. .SUNDAY...Mostly sunny. Highs 62 to 68. West winds 10 to 15 mph with gusts up to 30 mph. .SUNDAY NIGHT...Partly cloudy. Lows 33 to 43. .MONDAY...Partly cloudy. Highs 63 to 69. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 38 to 46. .TUESDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 62 to 70. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows 38 to 46. Chance of rain 40 percent. .WEDNESDAY...Mostly cloudy with a 30 percent chance of thunderstorms. Highs 62 to 68. .WEDNESDAY NIGHT...Mostly cloudy with a 30 percent chance of showers. Lows 38 to 46. .THURSDAY...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Highs 60 to 68. Chance of rain 30 percent. .THURSDAY NIGHT...Mostly cloudy with a 40 percent chance of showers. Lows 38 to 46. .FRIDAY...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Highs 61 to 69. Chance of rain 30 percent. $$ COZ031-033-191200- West Jackson and West Grand Counties Above 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- Including Mt Zirkel, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, and Willow Creek Pass 605 PM MDT Fri Sep 18 2026 .TONIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then a slight chance of rain showers after midnight. Lows 36 to 46. Chance of rain 30 percent. .SATURDAY...Chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Highs 51 to 61. Southwest winds 10 to 15 mph in the afternoon. Chance of rain 70 percent. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Slight chance of thunderstorms in the evening. Chance of rain showers. Lows 30 to 40. Chance of rain 40 percent. .SUNDAY...Mostly cloudy with a 30 percent chance of rain showers. Highs 47 to 57. West winds 10 to 15 mph with gusts up to 25 mph. .SUNDAY NIGHT...Mostly clear. Lows 28 to 38. .MONDAY AND MONDAY NIGHT...Mostly clear. Highs 53 to 63. Lows 31 to 41. .TUESDAY...Partly cloudy with a chance of rain showers and slight chance of thunderstorms. Highs 55 to 65. Chance of rain 40 percent. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy with a 20 percent chance of thunderstorms. Lows 34 to 44. Highs 54 to 64. .WEDNESDAY NIGHT...Partly cloudy. Lows 33 to 43. .THURSDAY...Partly cloudy with a 10 percent chance of thunderstorms. Highs 56 to 66. .THURSDAY NIGHT...Mostly cloudy with a 10 percent chance of rain showers. Lows 35 to 45. .FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 56 to 66. $$ COZ034-191200- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Blue Sky, Williams Fork Mountains, and Winter Park 605 PM MDT Fri Sep 18 2026 .TONIGHT...Mostly cloudy with a chance of rain showers and slight chance of thunderstorms early in the evening, then partly cloudy with a slight chance of rain showers overnight. Lows 36 to 44. Chance of rain 30 percent. .SATURDAY...Partly cloudy with a slight chance of rain showers in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 52 to 62. Southwest winds 10 to 15 mph in the afternoon. Chance of rain 40 percent. .SATURDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in the evening. Lows 30 to 40. Chance of precipitation 20 percent. .SUNDAY...Partly cloudy with a 10 percent chance of rain showers. Highs 49 to 59. West winds 10 to 15 mph with gusts up to 30 mph. .SUNDAY NIGHT...Mostly clear. Lows 28 to 38. .MONDAY...Mostly sunny. Highs 53 to 63. .MONDAY NIGHT...Partly cloudy. Lows 32 to 42. .TUESDAY...Partly cloudy with a 50 percent chance of thunderstorms. Highs 54 to 64. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 33 to 43. Chance of rain 40 percent. .WEDNESDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 53 to 63. .WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of rain showers. Lows 33 to 43. .THURSDAY...Mostly cloudy with a chance of rain showers and slight chance of thunderstorms. Highs 53 to 63. Chance of rain 30 percent. .THURSDAY NIGHT...Mostly cloudy with a 40 percent chance of rain showers. Lows 35 to 45. .FRIDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 54 to 64. $$