FPUS55 KBOU 180649 ZFPBOU Zone Forecast Product for Northeast Colorado National Weather Service Denver/Boulder CO 1249 AM MDT Sat Apr 18 2026 COZ038>040-182100- 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 1249 AM MDT Sat Apr 18 2026 ...FREEZE WARNING IN EFFECT UNTIL 8 AM MDT THIS MORNING... .REST OF TONIGHT...Mostly clear. Lows 19 to 25. .SATURDAY...Mostly sunny. Highs in the mid to upper 50s. Northwest winds 10 to 15 mph in the morning, becoming light. .SATURDAY NIGHT...Partly cloudy. Lows 27 to 35. .SUNDAY...Mostly sunny. Warmer. Highs in the lower to mid 70s. .SUNDAY NIGHT...Mostly clear. Lows 33 to 41. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 70s to lower 80s. Lows 42 to 48. .TUESDAY...Mostly sunny. Highs near 80. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Partly cloudy. Lows 43 to 52. Highs near 80. .THURSDAY...Partly cloudy with a 20 percent chance of showers. Highs 64 to 70. .THURSDAY NIGHT...Mostly cloudy with a chance of rain and snow showers. Colder. Lows 29 to 37. Chance of precipitation 30 percent. .FRIDAY...Mostly cloudy with a chance of rain showers, snow showers and slight chance of thunderstorms. Highs 54 to 60. Chance of precipitation 40 percent. $$ COZ041-182100- Elbert/Central and East Douglas Counties Above 6000 Feet- Including Castle Rock, Elbert, Fondis, Kiowa, and Larkspur 1249 AM MDT Sat Apr 18 2026 ...FREEZE WARNING IN EFFECT UNTIL 8 AM MDT THIS MORNING... .REST OF TONIGHT...Mostly clear. Lows 13 to 19. .SATURDAY...Sunny. Highs in the lower to mid 50s. Northwest winds 10 to 15 mph in the morning, becoming light. .SATURDAY NIGHT...Mostly clear. Lows near 30. South winds 10 to 15 mph after midnight. .SUNDAY...Mostly sunny. Warmer. Highs near 70. .SUNDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs 72 to 78. Lows in the lower to mid 40s. .TUESDAY...Mostly sunny. Highs 75 to 81. .TUESDAY NIGHT...Partly cloudy. Lows 45 to 51. .WEDNESDAY...Mostly sunny. Highs 75 to 81. .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower to mid 40s. .THURSDAY...Partly cloudy with a 20 percent chance of showers. Highs 63 to 69. .THURSDAY NIGHT...Mostly cloudy with a chance of rain and snow showers. Colder. Lows near 30. Chance of precipitation 30 percent. .FRIDAY...Mostly cloudy with a chance of snow showers, rain showers and slight chance of thunderstorms. Highs in the mid to upper 50s. Chance of precipitation 40 percent. $$ COZ042>045-182100- 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 1249 AM MDT Sat Apr 18 2026 ...FREEZE WARNING IN EFFECT UNTIL 8 AM MDT THIS MORNING... .REST OF TONIGHT...Partly cloudy. Lows 19 to 23. .SATURDAY...Mostly sunny. Highs in the mid 50s to lower 60s. Northwest winds 10 to 15 mph with gusts up to 30 mph. .SATURDAY NIGHT...Mostly clear. Lows 25 to 31. .SUNDAY...Mostly sunny. Warmer. Highs in the lower to mid 70s. .SUNDAY NIGHT...Mostly clear. Lows 29 to 37. .MONDAY...Partly cloudy. Highs near 80. .MONDAY NIGHT AND TUESDAY...Mostly clear. Lows 38 to 44. Highs in the lower to mid 80s. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Partly cloudy. Lows 42 to 51. Highs in the lower to mid 80s. .THURSDAY...Partly cloudy with a 20 percent chance of showers. Highs near 70. .THURSDAY NIGHT AND FRIDAY...Mostly cloudy with a chance of rain and snow showers. Lows near 30. Highs in the mid 50s to lower 60s. Chance of precipitation 30 percent. $$ COZ046-047-182100- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Including Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, and Punkin Center 1249 AM MDT Sat Apr 18 2026 ...FREEZE WARNING IN EFFECT UNTIL 8 AM MDT THIS MORNING... .REST OF TONIGHT...Mostly clear. Lows 16 to 22. .SATURDAY...Sunny. Highs in the mid to upper 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY NIGHT...Mostly clear. Lows in the mid to upper 20s. .SUNDAY...Mostly sunny. Warmer. Highs in the lower to mid 70s. .SUNDAY NIGHT...Mostly clear. Lows 30 to 38. .MONDAY...Partly cloudy. Highs near 80. .MONDAY NIGHT AND TUESDAY...Mostly clear. Lows 38 to 44. Highs in the lower to mid 80s. .TUESDAY NIGHT...Partly cloudy. Lows 42 to 48. .WEDNESDAY...Mostly sunny. Highs in the lower to mid 80s. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows 40 to 46. Highs 69 to 75. .THURSDAY NIGHT AND FRIDAY...Partly cloudy with a slight chance of rain and snow showers. Lows 27 to 33. Highs 57 to 63. Chance of precipitation 20 percent. $$ COZ048>051-182100- 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 1249 AM MDT Sat Apr 18 2026 ...FREEZE WARNING IN EFFECT UNTIL 8 AM MDT THIS MORNING... .REST OF TONIGHT...Partly cloudy. Lows 19 to 23. .SATURDAY...Mostly sunny. Highs in the upper 50s. Northwest winds 15 to 25 mph with gusts up to 35 mph. .SATURDAY NIGHT...Mostly clear. Lows in the upper 20s. .SUNDAY...Mostly sunny. Warmer. Highs in the lower to mid 70s. .SUNDAY NIGHT...Mostly clear. Lows in the lower to mid 30s. .MONDAY...Partly cloudy. Highs in the lower to mid 80s. .MONDAY NIGHT AND TUESDAY...Mostly clear. Lows near 40. Highs in the 80s. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 40s. .WEDNESDAY...Partly cloudy with a 10 percent chance of showers. Highs in the mid to upper 80s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the 40s. .THURSDAY...Partly cloudy with a 20 percent chance of showers. Highs in the lower to mid 70s. .THURSDAY NIGHT AND FRIDAY...Mostly cloudy with a chance of rain and snow showers. Cooler. Lows in the lower 30s. Highs in the upper 50s. Chance of precipitation 30 percent. $$ COZ035-182100- Larimer and Boulder Counties Between 6000 and 9000 Feet- Including Estes Park, Glendevey, Nederland, and Red Feather Lakes 1249 AM MDT Sat Apr 18 2026 .REST OF TONIGHT...Partly cloudy. Lows 14 to 24. West winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY...Sunny. Highs 42 to 52. West winds 10 to 20 mph with gusts up to 35 mph. .SATURDAY NIGHT...Mostly clear in the evening, then becoming mostly cloudy. Lows 25 to 33. .SUNDAY...Mostly sunny. Warmer. Highs 56 to 66. .SUNDAY NIGHT...Mostly clear. Lows 31 to 39. .MONDAY...Partly cloudy. Highs 62 to 72. .MONDAY NIGHT...Mostly clear. Lows 36 to 46. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 65 to 75. Lows 40 to 50. .WEDNESDAY...Partly cloudy with a 20 percent chance of showers. Highs 64 to 74. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of rain and snow showers. Lows 33 to 43. Chance of precipitation 20 percent. .THURSDAY...Partly cloudy with a chance of snow showers, rain showers and slight chance of thunderstorms. Highs 50 to 60. Chance of precipitation 30 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain and snow showers. Lows 25 to 33. Chance of precipitation 40 percent. .FRIDAY...Mostly cloudy with a chance of snow showers and slight chance of thunderstorms. Highs 43 to 53. Chance of snow 50 percent. $$ COZ036-182100- 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 1249 AM MDT Sat Apr 18 2026 .REST OF TONIGHT...Mostly clear. Lows 11 to 19. .SATURDAY...Mostly sunny. Highs 43 to 53. .SATURDAY NIGHT...Partly cloudy. Lows 25 to 33. .SUNDAY...Mostly sunny. Warmer. Highs 58 to 68. .SUNDAY NIGHT...Mostly clear. Lows 31 to 39. .MONDAY THROUGH TUESDAY NIGHT...Partly cloudy. Highs 65 to 75. Lows 38 to 48. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 66 to 76. Lows 34 to 44. .THURSDAY...Partly cloudy with a chance of rain and snow showers. Highs 53 to 63. Chance of precipitation 30 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain and snow showers. Lows 27 to 35. Chance of precipitation 30 percent. .FRIDAY...Mostly cloudy with a chance of snow showers, rain showers and slight chance of thunderstorms. Highs 46 to 56. Chance of precipitation 50 percent. $$ COZ030-032-182100- Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- Including Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 1249 AM MDT Sat Apr 18 2026 .REST OF TONIGHT...Mostly cloudy. Lows 11 to 15. .SATURDAY...Mostly sunny. Highs 38 to 46. West winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY NIGHT...Mostly clear in the evening, then becoming mostly cloudy. Lows 19 to 25. .SUNDAY...Mostly sunny. Highs 52 to 60. .SUNDAY NIGHT...Mostly clear. Lows 24 to 30. .MONDAY...Partly cloudy. Highs 59 to 65. .MONDAY NIGHT...Mostly clear. Lows 29 to 35. .TUESDAY...Partly cloudy. Highs 63 to 69. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid to upper 30s. .WEDNESDAY...Mostly sunny with a 10 percent chance of rain showers. Highs 59 to 65. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Lows near 30. .THURSDAY...Mostly cloudy with a chance of snow showers and slight chance of thunderstorms. Highs 45 to 51. Chance of snow 40 percent. .THURSDAY NIGHT...Mostly cloudy with a 30 percent chance of snow showers. Lows in the 20s. .FRIDAY...Mostly cloudy with a chance of snow showers and slight chance of thunderstorms. Highs 44 to 50. Chance of snow 40 percent. $$ COZ037-182100- Central and Southeast Park County- Including Fairplay, Hartsel, Lake George, and South Park 1249 AM MDT Sat Apr 18 2026 .REST OF TONIGHT...Mostly clear. Lows 11 to 17. .SATURDAY...Mostly sunny. Highs 42 to 48. Northwest winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY NIGHT...Partly cloudy. Lows 20 to 26. .SUNDAY...Mostly sunny. Highs 54 to 62. West winds 10 to 15 mph with gusts up to 30 mph. .SUNDAY NIGHT...Mostly clear. Lows 26 to 32. .MONDAY THROUGH TUESDAY NIGHT...Partly cloudy. Highs 58 to 68. Lows 30 to 39. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Windy. Highs 59 to 67. Lows in the lower to mid 30s. .THURSDAY...Mostly sunny with a 10 percent chance of snow showers. Windy. Highs 47 to 55. .THURSDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Lows in the mid to upper 20s. .FRIDAY...Partly cloudy with a 30 percent chance of snow showers. Highs 45 to 53. $$ COZ031-033-182100- West Jackson and West Grand Counties Above 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- Including Mt Zirkel, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, and Willow Creek Pass 1249 AM MDT Sat Apr 18 2026 .REST OF TONIGHT...Mostly cloudy with a 10 percent chance of snow showers. Lows 6 to 16. West winds 10 to 15 mph with gusts up to 25 mph. Wind chill readings 5 below to 15 below zero. .SATURDAY...Mostly sunny. Highs 30 to 40. West winds 10 to 15 mph with gusts up to 30 mph. .SATURDAY NIGHT...Partly cloudy. Lows 17 to 25. West winds 10 to 15 mph in the evening, becoming light. .SUNDAY...Mostly sunny. Highs 43 to 53. West winds 10 to 15 mph with gusts up to 25 mph. .SUNDAY NIGHT...Mostly clear. Lows 23 to 31. .MONDAY...Partly cloudy. Highs 49 to 59. .MONDAY NIGHT...Mostly clear. Lows 28 to 36. .TUESDAY...Partly cloudy. Highs 53 to 63. .TUESDAY NIGHT...Partly cloudy with a 10 percent chance of rain showers. Lows 32 to 40. .WEDNESDAY...Partly cloudy with a slight chance of rain and snow showers. Highs 49 to 59. Chance of precipitation 20 percent. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Lows 25 to 33. .THURSDAY...Mostly cloudy with a chance of snow showers and slight chance of thunderstorms. Highs 35 to 45. Chance of snow 50 percent. .THURSDAY NIGHT...Mostly cloudy with a 50 percent chance of snow showers. Lows 19 to 27. .FRIDAY...Snow showers likely and slight chance of thunderstorms. Highs 33 to 43. Chance of snow 60 percent. $$ COZ034-182100- 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 1249 AM MDT Sat Apr 18 2026 .REST OF TONIGHT...Partly cloudy. Lows 4 to 14. West winds 10 to 15 mph with gusts up to 30 mph. .SATURDAY...Mostly sunny. Highs 30 to 40. Northwest winds 10 to 20 mph with gusts up to 35 mph. .SATURDAY NIGHT...Partly cloudy. Lows 16 to 26. .SUNDAY...Mostly sunny. Highs 43 to 53. West winds 10 to 15 mph with gusts up to 30 mph. .SUNDAY NIGHT...Mostly clear. Lows 22 to 32. .MONDAY...Partly cloudy. Highs 47 to 57. .MONDAY NIGHT...Mostly clear. Lows 26 to 36. .TUESDAY AND TUESDAY NIGHT...Partly cloudy with a slight chance of rain and snow showers. Highs 51 to 61. Lows 28 to 38. Chance of precipitation 20 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Highs 49 to 59. Lows 23 to 33. .THURSDAY...Mostly cloudy with a chance of snow showers and slight chance of thunderstorms. Windy. Highs 36 to 46. Chance of snow 40 percent. .THURSDAY NIGHT...Mostly cloudy with a 40 percent chance of snow showers. Lows 18 to 28. .FRIDAY...Mostly cloudy with a chance of snow showers and slight chance of thunderstorms. Highs 34 to 44. Chance of snow 50 percent. $$