Navigation

External Links

ThorntonWeather.com on Twitter

ThorntonWeather.com on Facebook

Alerts

Adams County
 Details for Adams County Red Flag Warning
 Thornton
 Details for Thornton Red Flag Warning
Red Flag Warning RED FLAG WARNING - 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: 10-Mar-2026 @ 4:35am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 1.9°F than last hour.

49.1°F

24-hr diff: 6.6°FWarmer 6.6°F than yesterday at this time.
Cool
High Today
58.3°F
12:00 AM 		Low Today
49.0°F
1:13 AM
Yest High
75.8°F
3:32 PM 		Yest Low
40.6°F
3:45 AM
Sta* High
73.8°F
2025 		Sta* Low
0.1°F
2022
* This Station's Records Since 11/2006
Night time, Dry, A few clouds Night time, Dry, A few clouds

Wind from SW Wind:  SW
3.2
Gusting to:
 3.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: MODERATE Current CBI
Fire Danger:
53.0 of 100
Overnight

Overnight: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy
Lo 42°F Hi 72°F Lo 33°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 1.3°F since last hour. 19.0°F
Last Hour: Decreased 1.3°F since last hour. -1.3°F
High 3:09 AM: 22.4°F
Low 1:35 AM: 15.4°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 39.0°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.60 in
Mar Rain: 0.60 in
Mar to Date
  Avg:10 		0.21 in
Mar to Date
  Diff from Avg:10 		Over 0.39 in for the month 0.39 in
Mar Avg: 1.25 in
Diff from Avg: Under 0.65 in for the month 0.65 in
Season:1 0.86 in
YTD
  Avg:11 		1.18 in
YTD
  Diff from Avg:11 		Under 0.32 in for the year 0.32 in
Last Rain
Time/Date: 		6-Mar-2026
at 8:56 PM
7 rain days in 2026
2 days in March
3 days since last rain
Current: SW  3.2 mph
1Hr Average: 7.2 mph
Wind Run: 24.00 miles
Wind Gust
Current: 3.0 mph
Today: 19.6 mph 2:30 AM
Month: 30.0 mph 5-Mar
Year: 43.0 mph 25-Feb
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
11 h 40 m 18 s
of Sunlight Yesterday
11 h 42 m 56 s
of Sunlight Today Which is
2 min 38 sec longer than
yesterday
11 h 45 m 35 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waning Gibbous
Waning Gibbous, 20 days, 22 hours, 39 minutes in cycle
59%
Illuminated
Humidity Barometer
Current: Increased 1% since last hour. 30%
Last Hour: Increased 1% since last hour. 1%
High 3:48 AM: 33%
Low 12:00 AM: 19%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.016 inHg/hr 29.374 inHg
Last Hour: Falling slowly
High 1:32 AM: 29.413
Low 4:27 AM: 29.372
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 2.0
Mar: 164.2
2026 to Date: 1611.7
Cooling Degree Days
2026 to Date: 0.0
Today: 0.00 in
Yesterday: 0.00 in
Mar Snow: Under 5.097 in for the month 5.10 in
Mar Avg: 10.20 in
Diff from Avg: -5.10 in
Season Total:2 16.90 in
Snow Depth: 0.00 in
1 snow day in March
9 snow days this season.2
First Snow of Season:
28-Nov-2025
Average 1st Snow:
29 of Oct
Current: 48.5°F
Low 3:53 AM: 45.5°F
Yesterday: 37.3°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
42

Good
Density:
1.22 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   5.1 @ 12:48 PM
Mar-10

4.6 		Mar-11

4.5 		Mar-12

4.6
High Yest:   754.0 @ 12:48 PM
Sun Hours Today:
00:00
   This Month: 29:52 Hrs
Rise: 7:18 am  Set: 7:00 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Early Morning
YTD Avg Temp: 40.6°F
Sunrise: 7:18 am
Sunset: 7:00 pm
Moonrise: 1:49 am
Moonset: 10:42 am
Full Moon: 03-Mar-2026
New Moon: 01:24 UTC
18-Mar-2026
Updated at Midnight
Current ET: 0.09 in
7-Days Rain: 0.60 in
7-Days ET: 0.78 in
7-Day: 0.18 in water in deficit of what evaporated in last 7 days. 0.18 in
March: 0.38 in water in deficit of what evaporated this month. 0.38 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 10 of just the month of March for this station since 2006.   11 Historical average rain this season to day 10 of March for this station since 2006.
 NWS Weather Forecast  -   Outlook Overnight & Tuesday
Overnight

Overnight: Mostly Clear
Mostly Clear

Lo 42°F 		NWS forecast: Mostly clear, with a low around 42. South southwest wind around 8 mph.
 Tuesday

Tuesday: Mostly Sunny
Mostly Sunny

Hi 72°F 		NWS forecast: Mostly sunny. High near 72, with temperatures falling to around 70 in the afternoon. West southwest wind 7 to 17 mph, with gusts as high as 28 mph.
 NWS Short Term Weather Forecast
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy
Wednesday

Wednesday: Sunny
Sunny
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Thursday
Night
Thursday Night: Mostly Cloudy
Mostly Cloudy
Friday

Friday: Partly Sunny
Partly Sunny
Friday
Night
Friday Night: Mostly Cloudy
Mostly Cloudy
Lo 33°F Hi 57°F Lo 35°F Hi 69°F Lo 45°F Hi 73°F Lo 45°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