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Thornton, Colorado weather · now

86°

Mostly Cloudy

Feels
83°
High / Low
— / 67°
Wind
41 mph NW
Humidity
24%
No precipitation expected in the next 1.5 hours.

Precipitation · next 12 hrs

Peak 22% · 7 PM

7 PM
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10 PM
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1 AM
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4 AM
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6 AM
Unhealthy for sensitiveAir quality PollenTreeNoneGrassModerateWeedModerate
Sun 6:09 AM 8:00 PM 13h 52m
Moon Waning Crescent 2% lit

Current weather and 7-day forecast for Thornton, Colorado, sourced directly from the National Weather Service. Expect patchy smoke today. 1 active weather alert in effect.

Next 24 hours

60° 80° 100° ↑ 92° ↓ 68° 7 PM 10 PM 1 AM 4 AM 7 AM 10 AM 1 PM 4 PM

  1. 7 PM

    87°

    22%

  2. 9 PM

    82°

    0%

  3. 11 PM

    79°

    0%

  4. 1 AM

    76°

    0%

  5. 3 AM

    72°

    0%

  6. 5 AM

    70°

    0%

  7. 7 AM

    70°

    1%

  8. 9 AM

    76°

    1%

  9. 11 AM

    87°

    1%

  10. 1 PM

    91°

    24%

  11. 3 PM

    91°

    47%

  12. 5 PM

    84°

    47%

Live radar

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7 days

  1. Today 8/11 Patchy Smoke 22% — · 67°
    1. 7 PM 87° Patchy Smoke 22%
    2. 8 PM 85° Patchy Smoke 22%
    3. 9 PM 82° Patchy Smoke
    4. 10 PM 80° Patchy Smoke
    5. 11 PM 79° Patchy Smoke
  2. Wed 8/12 Patchy Smoke 47% 92° · 63°
    1. 12 AM 77° Patchy Smoke
    2. 1 AM 76° Patchy Smoke
    3. 2 AM 75° Patchy Smoke
    4. 3 AM 72° Patchy Smoke
    5. 4 AM 72° Patchy Smoke
    6. 5 AM 70° Patchy Smoke
    7. 6 AM 68° Patchy Smoke 1%
    8. 7 AM 70° Patchy Smoke 1%
    9. 8 AM 72° Patchy Smoke 1%
    10. 9 AM 76° Patchy Smoke 1%
    11. 10 AM 82° Patchy Smoke 1%
    12. 11 AM 87° Patchy Smoke 1%
    13. 12 PM 90° Patchy Smoke 24%
    14. 1 PM 91° Patchy Smoke 24%
    15. 2 PM 92° Patchy Smoke 24%
    16. 3 PM 91° Chance Showers And Thunderstorms 47%
    17. 4 PM 87° Chance Showers And Thunderstorms 47%
    18. 5 PM 84° Chance Showers And Thunderstorms 47%
    19. 6 PM 80° Patchy Smoke 47%
    20. 7 PM 79° Chance Showers And Thunderstorms 47%
    21. 8 PM 77° Chance Showers And Thunderstorms 47%
    22. 9 PM 75° Slight Chance Rain Showers 20%
    23. 10 PM 73° Slight Chance Rain Showers 20%
    24. 11 PM 73° Slight Chance Rain Showers 20%
  3. Thu 8/13 Showers And Thunderstorms 80% 83° · 59°
    1. 12 AM 72° Mostly Cloudy 3%
    2. 1 AM 72° Mostly Cloudy 3%
    3. 2 AM 71° Mostly Cloudy 3%
    4. 3 AM 68° Partly Cloudy 1%
    5. 4 AM 68° Mostly Cloudy 1%
    6. 5 AM 67° Mostly Cloudy 1%
    7. 6 AM 66° Slight Chance Rain Showers 17%
    8. 7 AM 64° Slight Chance Rain Showers 17%
    9. 8 AM 65° Slight Chance Rain Showers 17%
    10. 9 AM 69° Slight Chance Rain Showers 17%
    11. 10 AM 72° Slight Chance Rain Showers 17%
    12. 11 AM 75° Slight Chance Rain Showers 17%
    13. 12 PM 78° Showers And Thunderstorms 76%
    14. 1 PM 80° Showers And Thunderstorms 76%
    15. 2 PM 82° Showers And Thunderstorms 76%
    16. 3 PM 82° Showers And Thunderstorms 76%
    17. 4 PM 81° Showers And Thunderstorms 76%
    18. 5 PM 78° Showers And Thunderstorms 76%
    19. 6 PM 76° Showers And Thunderstorms 80%
    20. 7 PM 74° Showers And Thunderstorms 80%
    21. 8 PM 72° Showers And Thunderstorms 80%
    22. 9 PM 70° Showers And Thunderstorms 80%
    23. 10 PM 69° Showers And Thunderstorms 80%
    24. 11 PM 68° Showers And Thunderstorms 80%
  4. Fri 8/14 Partly Sunny then Showers And Thunderstorms 84% 83° · 57°
    1. 12 AM 67° Slight Chance Rain Showers 16%
    2. 1 AM 66° Slight Chance Rain Showers 16%
    3. 2 AM 65° Slight Chance Rain Showers 16%
    4. 3 AM 64° Slight Chance Rain Showers 16%
    5. 4 AM 62° Slight Chance Rain Showers 16%
    6. 5 AM 61° Slight Chance Rain Showers 16%
    7. 6 AM 60° Partly Sunny 2%
    8. 7 AM 61° Partly Sunny 2%
    9. 8 AM 63° Partly Sunny 2%
    10. 9 AM 66° Mostly Sunny 2%
    11. 10 AM 70° Partly Sunny 2%
    12. 11 AM 74° Mostly Cloudy 2%
    13. 12 PM 78° Showers And Thunderstorms 80%
    14. 1 PM 81° Showers And Thunderstorms 80%
    15. 2 PM 82° Showers And Thunderstorms 80%
    16. 3 PM 82° Showers And Thunderstorms 80%
    17. 4 PM 81° Showers And Thunderstorms 80%
    18. 5 PM 79° Showers And Thunderstorms 80%
    19. 6 PM 74° Showers And Thunderstorms 84%
    20. 7 PM 72° Showers And Thunderstorms 84%
    21. 8 PM 70° Showers And Thunderstorms 84%
    22. 9 PM 68° Showers And Thunderstorms 84%
    23. 10 PM 67° Showers And Thunderstorms 84%
    24. 11 PM 66° Showers And Thunderstorms 84%
  5. Sat 8/15 Partly Sunny then Showers And Thunderstorms Likely 61% 82° · 57°
    1. 12 AM 65° Slight Chance Rain Showers 15%
    2. 1 AM 64° Slight Chance Rain Showers 15%
    3. 2 AM 63° Slight Chance Rain Showers 15%
    4. 3 AM 62° Slight Chance Rain Showers 15%
    5. 4 AM 60° Slight Chance Rain Showers 15%
    6. 5 AM 58° Slight Chance Rain Showers 15%
    7. 6 AM 58° Mostly Sunny 11%
    8. 7 AM 60° Mostly Sunny 11%
    9. 8 AM 63° Mostly Sunny 11%
    10. 9 AM 67° Mostly Sunny 11%
    11. 10 AM 71° Mostly Sunny 11%
    12. 11 AM 74° Mostly Sunny 11%
    13. 12 PM 77° Showers And Thunderstorms Likely 59%
    14. 1 PM 79° Showers And Thunderstorms Likely 59%
    15. 2 PM 81° Showers And Thunderstorms Likely 59%
    16. 3 PM 81° Showers And Thunderstorms Likely 59%
    17. 4 PM 80° Showers And Thunderstorms Likely 59%
    18. 5 PM 79° Showers And Thunderstorms Likely 59%
    19. 6 PM 77° Showers And Thunderstorms Likely 61%
    20. 7 PM 75° Showers And Thunderstorms Likely 61%
    21. 8 PM 72° Showers And Thunderstorms Likely 61%
    22. 9 PM 70° Showers And Thunderstorms Likely 61%
    23. 10 PM 68° Showers And Thunderstorms Likely 61%
    24. 11 PM 67° Showers And Thunderstorms Likely 61%
  6. Sun 8/16 Partly Sunny then Showers And Thunderstorms Likely 55% 82° · 57°
    1. 12 AM 66° Slight Chance Rain Showers 15%
    2. 1 AM 65° Slight Chance Rain Showers 15%
    3. 2 AM 63° Slight Chance Rain Showers 15%
    4. 3 AM 62° Slight Chance Rain Showers 15%
    5. 4 AM 60° Slight Chance Rain Showers 15%
    6. 5 AM 59° Slight Chance Rain Showers 15%
    7. 6 AM 59° Mostly Sunny 3%
    8. 7 AM 60° Mostly Sunny 3%
    9. 8 AM 63° Mostly Sunny 3%
    10. 9 AM 66° Mostly Sunny 3%
    11. 10 AM 70° Mostly Sunny 3%
    12. 11 AM 74° Mostly Sunny 3%
    13. 12 PM 77° Showers And Thunderstorms Likely 55%
    14. 1 PM 79° Showers And Thunderstorms Likely 55%
    15. 2 PM 81° Showers And Thunderstorms Likely 55%
    16. 3 PM 81° Showers And Thunderstorms Likely 55%
    17. 4 PM 81° Showers And Thunderstorms Likely 55%
    18. 5 PM 80° Showers And Thunderstorms Likely 55%
    19. 6 PM 78° Chance Showers And Thunderstorms 42%
    20. 7 PM 76° Chance Showers And Thunderstorms 42%
    21. 8 PM 73° Chance Showers And Thunderstorms 42%
    22. 9 PM 71° Chance Showers And Thunderstorms 42%
    23. 10 PM 69° Chance Showers And Thunderstorms 42%
    24. 11 PM 67° Chance Showers And Thunderstorms 42%
  7. Mon 8/17 Mostly Sunny then Chance Showers And Thunderstorms 28% 86° · 59°
    1. 12 AM 66° Partly Cloudy 3%
    2. 1 AM 65° Partly Cloudy 3%
    3. 2 AM 63° Partly Cloudy 3%
    4. 3 AM 62° Partly Cloudy 3%
    5. 4 AM 60° Partly Cloudy 3%
    6. 5 AM 59° Partly Cloudy 3%
    7. 6 AM 59° Mostly Sunny 2%
    8. 7 AM 61° Mostly Sunny 2%
    9. 8 AM 63° Mostly Sunny 2%
    10. 9 AM 67° Mostly Sunny 2%
    11. 10 AM 71° Mostly Sunny 2%
    12. 11 AM 75° Mostly Sunny 2%
    13. 12 PM 79° Chance Showers And Thunderstorms 28%
    14. 1 PM 82° Chance Showers And Thunderstorms 28%
    15. 2 PM 84° Chance Showers And Thunderstorms 28%
    16. 3 PM 85° Chance Showers And Thunderstorms 28%
    17. 4 PM 85° Chance Showers And Thunderstorms 28%
    18. 5 PM 85° Chance Showers And Thunderstorms 28%
    19. 6 PM 83° Chance Showers And Thunderstorms 25%
    20. 7 PM 80° Chance Showers And Thunderstorms 25%
    21. 8 PM 77° Chance Showers And Thunderstorms 25%
    22. 9 PM 74° Chance Showers And Thunderstorms 25%
    23. 10 PM 72° Chance Showers And Thunderstorms 25%
    24. 11 PM 70° Chance Showers And Thunderstorms 25%
Extended outlook days 8–16
  1. Tue 8/18 Cloudy 31% 89° · 71°
  2. Wed 8/19 Drizzle 35% 91° · 72°
  3. Thu 8/20 Drizzle 41% 90° · 72°
  4. Fri 8/21 Rain Showers 43% 88° · 67°
  5. Sat 8/22 Rain Showers 71% 85° · 66°
  6. Sun 8/23 Drizzle 74% 80° · 63°
  7. Mon 8/24 Drizzle 52% 80° · 61°
  8. Tue 8/25 Drizzle 48% 81° · 64°
  9. Wed 8/26 Drizzle 45% 79° · 63°

Days 8+ from the Open-Meteo multi-model ensemble — treat as a guide; accuracy drops past day 7.

Best day this week

Mild temps, low rain chance, clearer skies.

Wednesday, 8/12

Patchy Smoke, 92° / 63°, 47% rain

  1. Tomorrow92°63°
  2. Thu83°59°
  3. Fri83°57°
  4. Sat82°57°
  5. Sun82°57°
  6. Mon86°59°

Best time to head outside

Picks the upcoming daytime hour with the most favorable conditions for each activity. Factors in temperature, wind, precipitation timing, and pollen.

How well did we do?

Average miss by lead time.

Each morning we save the day's predicted high/low. As later days arrive, we grade what we said against what the station actually recorded.

Same day
±4°
6 days graded
1 day out
±6°
6 days graded
3 days out
±6°
7 days graded
7 days out
±13°
6 days graded
Day-by-day, 1 day out6 days
  1. Sun, Aug 9±4°
    High99°97°+2°
    Low66°70°-4°
  2. Sat, Aug 8±5°
    High100°100°0°
    Low69°64°+5°
  3. Fri, Aug 7±5°
    High98°93°+5°
    Low69°64°+5°
  4. Thu, Aug 6±2°
    High97°97°0°
    Low63°61°+2°
  5. Wed, Aug 5±9°
    High87°82°+5°
    Low61°52°+9°
  6. Tue, Aug 4±11°
    High79°68°+11°
    Low59°59°0°

Climate normals

What weather to expect in Thornton

Thornton in August typically averages 88° highs and 62° lows, with about 11 days of rain. The hottest stretch is July (average high 91°); the coldest is January (average low 19°). May is the wettest month on average.

MonthAvg highAvg lowRainy days
Jan41°19°9
Feb50°24°6
Mar64°35°7
Apr65°38°12
May71°46°19
Jun84°57°13
Jul91°63°10
Aug88°62°11
Sep82°53°6
Oct70°43°6
Nov53°30°8
Dec50°28°5

Normals derived from the past two years of observations via Open-Meteo's historical archive.

More for Thornton

Other cities in Colorado

Detailed forecast (NWS)

Today
Patchy smoke and a slight chance of showers and thunderstorms. Mostly cloudy. Low around 67, with temperatures rising to around 70 overnight. West southwest wind 3 to 8 mph. Chance of precipitation is 20%.
Wednesday
Patchy smoke before noon, then patchy smoke and a chance of showers and thunderstorms. Partly sunny. High near 92, with temperatures falling to around 84 in the afternoon. North northwest wind 2 to 12 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Thursday
A slight chance of rain showers before noon, then showers and thunderstorms. Partly sunny, with a high near 83. Northeast wind 3 to 7 mph, with gusts as high as 16 mph. Chance of precipitation is 80%.
Friday
Showers and thunderstorms after noon. Partly sunny, with a high near 83. Chance of precipitation is 80%.

Forecast details

NWS gridpoint
BOU 64,67
Radar station
KFTG
Time zone
America/Denver
Coordinates
39.868, -104.972