Navigation

External Links

ThorntonWeather.com on Twitter

ThorntonWeather.com on Facebook

Alerts


No alerts
No Warnings, Watches, or Advisories

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: 11-Mar-2025 @ 10:15pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 2.8°F than last hour.

52.6°F

24-hr diff: -2°FColder 2°F than yesterday at this time.
Cool
High Today
71.1°F
2:47 PM 		Low Today
37.1°F
7:23 AM
Yest High
73.8°F
2:53 PM 		Yest Low
34.6°F
3:39 AM
Sta* High
74.4°F
2011 		Sta* Low
5.8°F
2022
* This Station's Records Since 11/2006
Night time, Dry, Mostly cloudy Night time, Dry, Mostly cloudy

Wind from NNW Wind:  NNW
6.4
Gusting to:
 5.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: HIGH Current CBI
Fire Danger:
85.1 of 100
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Lo 37°F Hi 66°F Lo 34°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 2.4°F since last hour. 13.7°F
Last Hour: Decreased 2.4°F since last hour. -2.4°F
High 11:16 AM: 18.8°F
Low 3:18 PM: 1.8°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 40.0°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.07 in
Mar Rain: 0.27 in
Mar to Date
  Avg:10 		0.22 in
Mar to Date
  Diff from Avg:10 		Over 0.05 in for the month 0.05 in
Mar Avg: 1.23 in
Diff from Avg: Under 0.96 in for the month 0.96 in
Season:1 0.67 in
YTD
  Avg:11 		1.23 in
YTD
  Diff from Avg:11 		Under 0.56 in for the year 0.56 in
Last Rain
Time/Date: 		6-Mar-2025
at 7:40 PM
12 rain days in 2025
2 days in March
4 days since last rain
Current: NNW  6.4 mph
1Hr Average: 3.1 mph
Wind Run: 74.52 miles
Wind Gust
Current: 5.0 mph
Today: 15.0 mph 5:46 PM
Month: 47.0 mph 3-Mar
Year: 47.0 mph 3-Mar
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
11 h 46 m 11 s
of Sunlight Yesterday
11 h 48 m 50 s
of Sunlight Today Which is
2 min 39 sec longer than
yesterday
11 h 51 m 28 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waxing Gibbous
Waxing Gibbous, 12 days, 3 hours, 34 minutes in cycle
95%
Illuminated
Humidity Barometer
Current: No Change 21%
Last Hour: No Change 0%
High 6:45 AM: 39%
Low 3:18 PM: 7%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Rising 0.008 inHg/hr 29.423 inHg
Last Hour: Steady
High 9:39 AM: 29.543
Low 4:07 PM: 29.334
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 16.2
Mar: 237.6
2025 to Date: 2370.3
Cooling Degree Days
2025 to Date: 0.0
Today: 0.00 in
Yesterday: 0.00 in
Mar Snow: Under 10.433 in for the month 0.00 in
Mar Avg: 10.43 in
Diff from Avg: -10.43 in
Season Total:2 32.90 in
Snow Depth: 0.00 in
0 snow days in March
15 snow days this season.2
First Snow of Season:
6-Nov-2024
Average 1st Snow:
27 of Oct
Current: 50.6°F
Low 7:38 AM: 33.0°F
Yesterday: 30.0°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
N/A

No Data
Density:
1.22 kg/m3
UV Summary/Forecast Solar Summary
High Today:   5.0 @ 12:27 PM
Mar-12

4.2 		Mar-13

3.9 		Mar-14

4.5
High Today:  
800 W/m2 @ 12:29 PM
Sun Hours Today:
04:40
   This Month: 30:12 Hrs
Rise: 7:15 am  Set: 7:02 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Evening
YTD Avg Temp: 31.2°F
Sunrise: 7:15 am
Sunset: 7:02 pm
Moonrise: 5:49 pm
Moonset: 6:42 am
Full Moon: 14-Mar-2025
New Moon: 10:58 UTC
29-Mar-2025
Updated at Midnight
Current ET: 0.15 in
7-Days Rain: 0.07 in
7-Days ET: 0.74 in
7-Day: 0.674 in water in deficit of what evaporated in last 7 days. 0.674 in
March: 0.77 in water in deficit of what evaporated this month. 0.77 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:1 | S3C2:1 | Ajax 3.xx
ISS:Ok | CON:4.8 | RCP:99%
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.   10 Historical average only to day 11 of just the month of March for this station since 2006.   11 Historical average rain this season to day 11 of March for this station since 2006.
 NWS Weather Forecast  -   Outlook Tonight & Wednesday
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy

Lo 37°F 		NWS forecast: Mostly cloudy, with a low around 37. West wind around 10 mph, with gusts as high as 16 mph.
 Wednesday

Wednesday: Mostly Sunny
Mostly Sunny

Hi 66°F 		NWS forecast: Mostly sunny, with a high near 66. South wind 6 to 9 mph.
 NWS Short Term Weather Forecast
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Thursday
Night
Thursday Night: Mostly Cloudy then Slight Chance Light Rain
Mostly Cloudy then Slight Chance Light Rain
Friday

Friday: Rain And Snow Likely
Rain And Snow Likely
Friday
Night
Friday Night: Mostly Cloudy
Mostly Cloudy
Saturday

Saturday: Partly Sunny
Partly Sunny
Saturday
Night
Saturday Night: Slight Chance Light Snow then Mostly Cloudy
Slight Chance Light Snow then Mostly Cloudy
Lo 34°F Hi 70°F Lo 37°F Hi 50°F Lo 27°F Hi 47°F Lo 27°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