Navigation

External Links

ThorntonWeather.com on Twitter

ThorntonWeather.com on Facebook

Alerts

Adams County
 Details for Adams County Fire Weather Watch  +1 additional alert
 Thornton
 Details for Thornton Fire Weather Watch  +1 additional alert
Fire Weather Watch FIRE WEATHER WATCH - Adams County  - Thornton

Current Radar
Thornton, Colorado current radar
Click for larger view 		Current Webcam
Thornton, Colorado current webcam image
Click for larger view 		Latest News
powered by Surfing Waves
spacer
METRIC | IMPERIAL
Updated: 13-Feb-2026 @ 1:35pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 0.9°F than last hour.

57.1°F

24-hr diff: -1°FColder 1°F than yesterday at this time.
Cool
High Today
57.6°F
12:53 PM 		Low Today
30.6°F
6:57 AM
Yest High
59.8°F
2:12 PM 		Yest Low
31.2°F
6:47 AM
Sta* High
69.5°F
2008 		Sta* Low
-4.7°F
2021
* This Station's Records Since 11/2006
Partly cloudy, Dry Partly cloudy, Dry

Wind from NE Wind:  NE
2.8
Gusting to:
 2.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
35.7 of 100
Today

Today: Mostly Cloudy then Chance Rain Showers
Mostly Cloudy then Chance Rain Showers
Tonight

Tonight: Rain Showers Likely
Rain Showers Likely
Saturday

Saturday: Sunny
Sunny
Hi 57°F Lo 35°F Hi 56°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 1.7°F since last hour. 31.7°F
Last Hour: Increased 1.7°F since last hour. +1.7°F
High 11:27 AM: 34.5°F
Low 6:51 AM: 24.5°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 46.5°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.00 in
Feb Rain: 0.00 in
Feb to Date
  Avg:10 		0.31 in
Feb to Date
  Diff from Avg:10 		Under 0.31 in for the month 0.31 in
Feb Avg: 0.59 in
Diff from Avg: Under 0.59 in for the month 0.59 in
Season:1 0.26 in
YTD
  Avg:11 		0.72 in
YTD
  Diff from Avg:11 		Under 0.46 in for the year 0.46 in
Last Rain
Time/Date: 		24-Jan-2026
at 11:36 AM
5 rain days in 2026
0 days in February
17 days since last rain
Current: NE  2.8 mph
1Hr Average: 4.3 mph
Wind Run: 30.97 miles
Wind Gust
Current: 2.0 mph
Today: 13.0 mph 1:22 PM
Month: 32.0 mph 9-Feb
Year: 38.0 mph 16-Jan
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
10 h 36 m 41 s
of Sunlight Yesterday
10 h 39 m 5 s
of Sunlight Today Which is
2 min 24 sec longer than
yesterday
10 h 41 m 30 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waning Crescent
Waning Crescent, 26 days, 0 hours, 47 minutes in cycle
12%
Illuminated
Humidity Barometer
Current: Increased 1% since last hour. 38%
Last Hour: Increased 1% since last hour. 1%
High 7:01 AM: 79%
Low 12:49 PM: 34%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.03 inHg/hr 29.737 inHg
Last Hour: Falling
High 12:19 AM: 29.911
Low 1:34 PM: 29.737
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 16.0
Feb: 234.6
2026 to Date: 1127.6
Cooling Degree Days
2026 to Date: 0.0
Today: 0.00 in
Yesterday: 0.00 in
Feb Snow: Under 10.315 in for the month 0.00 in
Feb Avg: 10.31 in
Diff from Avg: -10.31 in
Season Total:2 11.80 in
Snow Depth: 0.00 in
0 snow days in February
8 snow days this season.2
First Snow of Season:
28-Nov-2025
Average 1st Snow:
29 of Oct
Current: 57.1°F
Low 6:38 AM: 27.2°F
Yesterday: 27.0°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
55

Moderate
Density:
1.22 kg/m3
Current UV Index Current Solar Energy9
1.2
Sunburn in
93 Minutes 		Highest:
11:46 AM
1.9
381 W/m2
56%
W/m2 ⇒ SI 		High Today:
11:39 AM
 647  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 38.1°F
Sunrise: 6:54 am
Sunset: 5:32 pm
Moonrise: 4:45 am
Moonset: 1:34 pm
Full Moon: 01-Feb-2026
New Moon: 12:02 UTC
17-Feb-2026
Updated at Midnight
Current ET: 0.07 in
7-Days Rain: 0.00 in
7-Days ET: 0.67 in
7-Day: 0.669 in water in deficit of what evaporated in last 7 days. 0.669 in
February: 0.91 in water in deficit of what evaporated this month. 0.91 in
Support this Site!
Your donation helps support this site
HIGHS: LOWS:
102.9°F
25-Jun-2012 		-14.6°F
2-Feb-2011
Daytime Records
  100.6°F°F
12-Jul-2024 		  -8.1°F°F
22-Dec-2022
Nitetime Records
  88.0°F°F
15-Aug-2012 		  -10.7°F°F
02-Feb-2011
ICN:5 | S3C2:1 | Ajax 3.xx
ISS:Ok | CON:4.8 | RCP:80%
1 Rain season: Jan 1st to Dec 31st.   2 Snow season July 1st to June 30th.   3 Snow manually measured usually around 5AM and 5PM.   5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).   6 Air Quality Index is provided by Colorado Department of Public Health & Environment.   9 Solar Index represents either an absolute scale of solar energy (W/m²) using the station’s recorded maximum or a percentage of computed theoretical solar maximum using the station’s location and time of day. These indices differ most when the sun is low on the horizon. The current scale is shown, and will toggle if it or the icon is clicked.   10 Historical average only to day 13 of just the month of February for this station since 2006.   11 Historical average rain this season to day 13 of February for this station since 2006.
 NWS Weather Forecast  -   Outlook Today & Tonight
Today

Today: Mostly Cloudy then Chance Rain Showers
Mostly Cloudy then Chance Rain Showers

Hi 57°F 		NWS forecast: A chance of rain showers after 4pm. Mostly cloudy. High near 57, with temperatures falling to around 55 in the afternoon. Northeast wind 3 to 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
 Tonight

Tonight: Rain Showers Likely
Rain Showers Likely

Lo 35°F 		NWS forecast: Rain showers likely before 4am. Mostly cloudy. Low around 35, with temperatures rising to around 38 overnight. North northwest wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
 NWS Short Term Weather Forecast
Saturday

Saturday: Sunny
Sunny
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Washington's
Birthday
Washington's Birthday: Partly Sunny
Partly Sunny
Monday
Night
Monday Night: Partly Cloudy then Chance Light Rain
Partly Cloudy then Chance Light Rain
Tuesday

Tuesday: Chance Light Rain
Chance Light Rain
Hi 56°F Lo 30°F Hi 65°F Lo 34°F Hi 65°F Lo 38°F Hi 58°F
Click here for the complete forecast.
ajax-dashboard6.php - Version 6.95h - 20-Feb-2023 - Script by: Scott of BurnsvilleWeatherLIVE.com
Now supported by Saratoga-weather.org Download