Thornton, Colorado · now
Clear
- High / Low
- 90° / 59°
- Wind
- 21 mph N
- Humidity
- 47%
Tomorrow· Thursday87°/53°· Partly Sunny then Slight Chance Showers And Thunderstorms
4° cooler than yesterday at this time
Current weather and 7-day forecast for Thornton, Colorado, sourced directly from the National Weather Service. Expect mostly sunny then slight chance showers and thunderstorms today. Today's high is 90° with a low near 59°.
What to wear today
Loose, light, and water nearby
90°F — wear breathable fabrics and stay hydrated.
Temperature · next 24 hours
Next 24 hours
-
6 AM
55°
0%
-
8 AM
62°
0%
-
10 AM
76°
0%
-
12 PM
83°
4%
-
2 PM
87°
4%
-
4 PM
87°
20%
-
6 PM
83°
12%
-
8 PM
80°
12%
-
10 PM
76°
8%
-
12 AM
71°
0%
-
2 AM
68°
0%
-
4 AM
63°
0%
Live radar
View full radar →7 days
- Today 5/13 Mostly Sunny then Slight Chance Showers And Thunderstorms 20% 90° · 59°
- Thu 5/14 Partly Sunny then Slight Chance Showers And Thunderstorms 18% 87° · 53°
- Fri 5/15 Sunny 9% 85° · 55°
- Sat 5/16 Mostly Sunny then Slight Chance Showers And Thunderstorms 16% 84° · 53°
- Sun 5/17 Mostly Sunny then Chance Showers And Thunderstorms 51% 81° · 46°
- Mon 5/18
Rain Showers Likely 74% 60° · 41° - Tue 5/19 Chance Rain Showers then Slight Chance Showers And Thunderstorms 25% 68° · 46°
Extended outlook days 8–16
- Wed 5/20 Mostly Sunny 17% 74° · 48°
- Thu 5/21
Cloudy 12% 83° · 56° - Fri 5/22 Cloudy 27% 85° · 62°
- Sat 5/23
Drizzle 25% 82° · 49° - Sun 5/24 Drizzle 31% 47° · 45°
- Mon 5/25 Sunny 32% 78° · 45°
- Tue 5/26 Mostly Sunny 34% 72° · 48°
- Wed 5/27 Mostly Sunny 34% 85° · 56°
- Thu 5/28 Cloudy 42% 90° · 63°
Days 8+ from the Open-Meteo multi-model ensemble — treat as a guide; accuracy drops past day 7.
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.
- Run7 AM
comfortable at 58°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note
Excellent100 / 100 - Bike8 AM
comfortable at 62°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note
Excellent100 / 100 - Golf8 AM
comfortable at 62°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note
Excellent100 / 100 - Picnic9 AM
comfortable at 68°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note
Excellent100 / 100
Climate normals
What weather to expect in Thornton
Thornton in May typically averages 70° highs and 44° lows, with about 16 days of rain. The hottest stretch is July (average high 90°); the coldest is January (average low 19°).
| Month | Avg high | Avg low | Rainy days |
|---|---|---|---|
| Jan | 41° | 19° | 9 |
| Feb | 50° | 24° | 6 |
| Mar | 64° | 35° | 7 |
| Apr | 65° | 38° | 12 |
| May | 70° | 44° | 16 |
| Jun | 85° | 58° | 10 |
| Jul | 90° | 62° | 9 |
| Aug | 88° | 62° | 11 |
| Sep | 82° | 53° | 6 |
| Oct | 70° | 43° | 6 |
| Nov | 53° | 30° | 8 |
| Dec | 50° | 28° | 5 |
Normals derived from the past two years of observations via Open-Meteo's historical archive.
More for Thornton
Other cities in Colorado