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: 28-Mar-2026 @ 11:20pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 3.7°F than last hour.

65.5°F

24-hr diff: 24.3°FWarmer 24.3°F than yesterday at this time.
Comfortable
High Today
83.3°F
3:48 PM 		Low Today
31.6°F
6:54 AM
Yest High
53.5°F
4:59 PM 		Yest Low
38.8°F
4:06 AM
Sta* High
79.8°F
2015 		Sta* Low
12.0°F
2009
* This Station's Records Since 11/2006
Station Record High
Night time, Dry, A few clouds Night time, Dry, A few clouds

Wind from WNW Wind:  WNW
4.2
Gusting to:
 7.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: HIGH Current CBI
Fire Danger:
84.9 of 100
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Sunday
Night
Sunday Night: Mostly Cloudy
Mostly Cloudy
Lo 50°F Hi 81°F Lo 50°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 1.7°F since last hour. 25.6°F
Last Hour: Decreased 1.7°F since last hour. -1.7°F
High 11:15 AM: 35.2°F
Low 3:51 PM: 21.8°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 49.2°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.00 in
Mar Rain: 0.65 in
Mar to Date
  Avg:10 		1.18 in
Mar to Date
  Diff from Avg:10 		Under 0.53 in for the month 0.53 in
Mar Avg: 1.25 in
Diff from Avg: Under 0.6 in for the month 0.60 in
Season:1 0.91 in
YTD
  Avg:11 		2.15 in
YTD
  Diff from Avg:11 		Under 1.24 in for the year 1.24 in
Last Rain
Time/Date: 		16-Mar-2026
at 10:49 AM
10 rain days in 2026
5 days in March
11 days since last rain
Current: WNW  4.2 mph
1Hr Average: 4.1 mph
Wind Run: 63.04 miles
Wind Gust
Current: 7.0 mph
Today: 20.0 mph 4:33 PM
Month: 43.0 mph 12-Mar
Year: 43.0 mph 25-Feb
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
12 h 27 m 50 s
of Sunlight Yesterday
12 h 30 m 28 s
of Sunlight Today Which is
2 min 38 sec longer than
yesterday
12 h 33 m 6 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waxing Gibbous
Waxing Gibbous, 10 days, 3 hours, 59 minutes in cycle
84%
Illuminated
Humidity Barometer
Current: Decreased 5% since last hour. 22%
Last Hour: Decreased 5% since last hour. 5%
High 6:32 AM: 78%
Low 3:22 PM: 11%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.014 inHg/hr 29.631 inHg
Last Hour: Steady
High 12:12 AM: 30.141
Low 8:09 PM: 29.611
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Cooling Degree Days Snow3 Heat Index Air
Today: 0.0
Mar: 19.0
2026 to Date: 19.4
Heating Degree Days
2026 to Date: 1809.6
Today: 0.00 in
Yesterday: 0.00 in
Mar Snow: Under 3.476 in for the month 6.80 in
Mar Avg: 10.28 in
Diff from Avg: -3.48 in
Season Total:2 18.60 in
Snow Depth: 0.00 in
2 snow days in March
10 snow days this season.2
First Snow of Season:
28-Nov-2025
Average 1st Snow:
29 of Oct
Current: 65.4°F
High 3:48pm: 80.6°F
Yesterday: 53.5°F
Record: 102.9°F
8-Jul-2021
Quality
Index6:
N/A

No Data
Density:
1.20 kg/m3
UV Summary/Forecast Solar Summary
High Today:   7.0 @ 12:25 PM
Mar-29

7.2 		Mar-30

6.3 		Mar-31

5.8
High Today:  
893 W/m2 @ 12:29 PM
Sun Hours Today:
05:21
   This Month: 118:25 Hrs
Rise: 6:48 am  Set: 7:20 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Evening
YTD Avg Temp: 44.0°F
Sunrise: 6:48 am
Sunset: 7:20 pm
Moonrise: 4:11 pm
Moonset: 5:13 am
Full Moon: 01-Apr-2026
New Moon: 11:52 UTC
17-Apr-2026
Updated at Midnight
Current ET: 0.15 in
7-Days Rain: 0.00 in
7-Days ET: 1.10 in
7-Day: 1.098 in water in deficit of what evaporated in last 7 days. 1.098 in
March: 3.22 in water in deficit of what evaporated this month. 3.22 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:4.7 | 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 28 of just the month of March for this station since 2006.   11 Historical average rain this season to day 28 of March for this station since 2006.
 NWS Weather Forecast  -   Outlook Tonight & Sunday
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy

Lo 50°F 		NWS forecast: Mostly cloudy, with a low around 50. West southwest wind 8 to 14 mph, with gusts as high as 22 mph.
 Sunday

Sunday: Mostly Sunny
Mostly Sunny

Hi 81°F 		NWS forecast: Mostly sunny, with a high near 81. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
 NWS Short Term Weather Forecast
Sunday
Night
Sunday Night: Mostly Cloudy
Mostly Cloudy
Monday

Monday: Partly Sunny
Partly Sunny
Monday
Night
Monday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
Tuesday

Tuesday: Chance Rain And Snow Showers then Rain And Snow Showers Likely
Chance Rain And Snow Showers then Rain And Snow Showers Likely
Tuesday
Night
Tuesday Night: Rain Showers Likely then Chance Rain And Snow Showers
Rain Showers Likely then Chance Rain And Snow Showers
Wednesday

Wednesday: Chance Rain Showers
Chance Rain Showers
Wednesday
Night
Wednesday Night: Chance Rain Showers then Partly Cloudy
Chance Rain Showers then Partly Cloudy
Lo 50°F Hi 81°F Lo 39°F Hi 53°F Lo 35°F Hi 59°F Lo 38°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