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-Jan-2026 @ 8:25am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 5.7°F than last hour.

32.5°F

Wind Chill:  30.0°F
Feels like:  30°F
24-hr diff: -5.8°FColder 5.8°F than yesterday at this time.
Cold
High Today
32.5°F
8:24 AM 		Low Today
25.6°F
7:49 AM
Yest High
52.7°F
2:45 PM 		Yest Low
25.8°F
6:13 AM
Sta* High
70.3°F
2011 		Sta* Low
2.3°F
2014
* This Station's Records Since 11/2006
Sunny, Dry Sunny, Dry

Wind from S Wind:  S
2.9
Gusting to:
 3.0 mph
Current Snow Snow3:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
35.2 of 100
Today

Today: Partly Sunny
Partly Sunny
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Hi 50°F Lo 25°F Hi 48°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 1.1°F since last hour. 8.5°F
Last Hour: Increased 1.1°F since last hour. +1.1°F
High 2:20 AM: 10.7°F
Low 7:33 AM: 6.6°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 26.1°F
Rain Today
rain graph
Melt Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.03 in
Jan Rain: 0.26 in
Jan to Date
  Avg:10 		0.37 in
Jan to Date
  Diff from Avg:10 		Under 0.11 in for the month 0.11 in
Jan Avg: 0.42 in
Diff from Avg: Under 0.16 in for the month 0.16 in
Season:1 0.26 in
YTD
  Avg:11 		0.37 in
YTD
  Diff from Avg:11 		Under 0.11 in for the year 0.11 in
Last Rain
Time/Date: 		24-Jan-2026
at 11:36 AM
5 rain days in 2026
5 days in January
1 day since last rain
Current: S  2.9 mph
1Hr Average: 2.3 mph
Wind Run: 33.24 miles
Wind Gust
Current: 3.0 mph
Today: 13.0 mph 4:01 AM
Month: 38.0 mph 16-Jan
Year: 38.0 mph 16-Jan
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
10 h 1 m 14 s
of Sunlight Yesterday
10 h 3 m 14 s
of Sunlight Today Which is
2 min 0 sec longer than
yesterday
10 h 5 m 17 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waxing Gibbous
Waxing Gibbous, 9 days, 19 hours, 38 minutes in cycle
77%
Illuminated
Humidity Barometer
Current: Decreased 7% since last hour. 36%
Last Hour: Decreased 7% since last hour. 7%
High 2:15 AM: 51%
Low 8:24 AM: 36%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.009 inHg/hr 30.095 inHg
Last Hour: Steady
High 12:00 AM: 30.153
Low 6:42 AM: 30.077
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 12.2
Jan: 786.4
2026 to Date: 784.8
Cooling Degree Days
2026 to Date: 0.0
Today: 0.00 in
Yesterday: 0.00 in
Jan Snow: Under 2.29 in for the month 4.60 in
Jan Avg: 6.89 in
Diff from Avg: -2.29 in
Season Total:2 11.80 in
Snow Depth: 0.00 in
5 snow days in January
8 snow days this season.2
First Snow of Season:
28-Nov-2025
Average 1st Snow:
29 of Oct
Current: 30.0°F
Low 6:05 AM: 19.6°F
Yesterday: 19.8°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
46

Good
Density:
1.30 kg/m3
Current UV Index Current Solar Energy9
0.5
Sunburn in
224 Minutes 		Highest:
8:24 AM
0.5
237 W/m2
100%
W/m2 ⇒ SI 		High Today:
8:24 AM
 237  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Morning
YTD Avg Temp: 35.4°F
Sunrise: 7:11 am
Sunset: 5:13 pm
Moonrise: 12:35 pm
Moonset: 3:28 am
Full Moon: 01-Feb-2026
New Moon: 12:02 UTC
17-Feb-2026
Updated at Midnight
Current ET: 0.03 in
7-Days Rain: 0.03 in
7-Days ET: 0.29 in
7-Day: 0.265 in water in deficit of what evaporated in last 7 days. 0.265 in
January: 1.03 in water in deficit of what evaporated this month. 1.03 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:0 | 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.   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 28 of just the month of January for this station since 2006.   11 Historical average rain this season to day 28 of January for this station since 2006.
 NWS Weather Forecast  -   Outlook Today & Tonight
Today

Today: Partly Sunny
Partly Sunny

Hi 50°F 		NWS forecast: Partly sunny. High near 50, with temperatures falling to around 46 in the afternoon. West wind around 7 mph.
 Tonight

Tonight: Mostly Cloudy
Mostly Cloudy

Lo 25°F 		NWS forecast: Mostly cloudy. Low around 25, with temperatures rising to around 29 overnight. West northwest wind around 6 mph.
 NWS Short Term Weather Forecast
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday

Friday: Sunny
Sunny
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday

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

Sunday: Sunny
Sunny
Hi 48°F Lo 24°F Hi 49°F Lo 23°F Hi 54°F Lo 26°F Hi 57°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