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: 03-Apr-2025 @ 8:50pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 0.9°F than last hour.

32.9°F

Wind Chill:  27.8°F
Feels like:  28°F
24-hr diff: -7.2°FColder 7.2°F than yesterday at this time.
Cold
High Today
43.0°F
11:14 AM 		Low Today
25.3°F
7:02 AM
Yest High
51.8°F
2:04 PM 		Yest Low
31.0°F
6:05 AM
Sta* High
78.9°F
2021 		Sta* Low
16.2°F
2020
* This Station's Records Since 11/2006
Night time, Stopped snowing, Mostly cloudy Night time, Stopped snowing, Mostly cloudy

Wind from ESE Wind:  ESE
5.4
Gusting to:
 6.0 mph
Current Rain Rain:
0.08 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
-2.2 of 100
Tonight

Tonight: Light Snow Likely
Light Snow Likely
Friday

Friday: Rain And Snow Likely
Rain And Snow Likely
Friday
Night
Friday Night: Snow Showers Likely
Snow Showers Likely
Lo 30°F Hi 40°F Lo 25°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 1.1°F since last hour. 30.8°F
Last Hour: Decreased 1.1°F since last hour. -1.1°F
High 4:20 PM: 33.6°F
Low 4:16 AM: 18.8°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 32.2°F
Rain Today
rain graph
Today: 0.08 in
Rate (/hr): 0.013 in
Storm Rain: 0.08 in
Yesterday: 0.04 in
Last 7 Days: 1.38 in
Apr Rain: 0.16 in
Apr to Date
  Avg:10 		0.11 in
Apr to Date
  Diff from Avg:10 		Over 0.05 in for the month 0.05 in
Apr Avg: 1.57 in
Diff from Avg: Under 1.41 in for the month 1.41 in
Season:1 2.13 in
YTD
  Avg:11 		2.37 in
YTD
  Diff from Avg:11 		Under 0.24 in for the year 0.24 in
17 rain days in 2025
3 days in April
0 days since last rain
Current: ESE  5.4 mph
1Hr Average: 4.6 mph
Wind Run: 67.29 miles
Wind Gust
Current: 6.0 mph
Today: 20.0 mph 11:44 AM
Month: 27.0 mph 2-Apr
Year: 47.2 mph 3-Mar
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
12 h 46 m 49 s
of Sunlight Yesterday
12 h 49 m 25 s
of Sunlight Today Which is
2 min 36 sec longer than
yesterday
12 h 52 m 1 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waxing Crescent
Waxing Crescent, 5 days, 15 hours, 52 minutes in cycle
39%
Illuminated
Humidity Barometer
Current: Decreased 1% since last hour. 92%
Last Hour: Decreased 1% since last hour. 1%
High 7:16 PM: 93%
Low 11:05 AM: 40%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Rising 0.019 inHg/hr 29.821 inHg
Last Hour: Rising slowly
High 8:34 PM: 29.825
Low 12:00 AM: 29.659
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 28.4
Apr: 77.8
2025 to Date: 2760.6
Cooling Degree Days
2025 to Date: 0.0
Today: 0.00 in
Yesterday: 0.40 in
Apr Snow: Under 5.309 in for the month 0.40 in
Apr Avg: 5.71 in
Diff from Avg: -5.31 in
Season Total:2 34.10 in
Snow Depth: 0.00 in
1 snow day in April
17 snow days this season.2
First Snow of Season:
6-Nov-2024
Average 1st Snow:
27 of Oct
Current: 27.8°F
Low 6:15 AM: 24.5°F
Yesterday: 25.9°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
42

Good
Density:
1.28 kg/m3
UV Summary/Forecast Solar Summary
High Today:   3.1 @ 12:53 PM
Apr-04

5.7 		Apr-05

5.8 		Apr-06

5.7
High Today:  
468 W/m2 @ 12:55 PM
Sun Hours Today:
00:08
   This Month: 06:13 Hrs
Rise: 6:38 am  Set: 7:26 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Evening
YTD Avg Temp: 35.3°F
Sunrise: 6:38 am
Sunset: 7:26 pm
Moonrise: 11:10 am
Moonset: 2:18 am
Full Moon: 12-Apr-2025
New Moon: 19:32 UTC
27-Apr-2025
Updated at Midnight
Current ET: 0.05 in
7-Days Rain: 1.38 in
7-Days ET: 0.69 in
7-Day: 0.691 in water in excess of what evaporated in last 7 days. 0.691 in
April: 0.03 in water in deficit of what evaporated this month. 0.03 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: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 3 of just the month of April for this station since 2006.   11 Historical average rain this season to day 3 of April for this station since 2006.
 NWS Weather Forecast  -   Outlook Tonight & Friday
Tonight

Tonight: Light Snow Likely
Light Snow Likely

Lo 30°F 		NWS forecast: Snow likely before 3am. Mostly cloudy. Low around 30, with temperatures rising to around 32 overnight. North wind 2 to 9 mph. Chance of precipitation is 70%. New snow accumulation of less than half an inch possible.
 Friday

Friday: Rain And Snow Likely
Rain And Snow Likely

Hi 40°F 		NWS forecast: A chance of snow between 7am and noon, then rain and snow likely. Cloudy. High near 40, with temperatures falling to around 38 in the afternoon. North wind 3 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
 NWS Short Term Weather Forecast
Friday
Night
Friday Night: Snow Showers Likely
Snow Showers Likely
Saturday

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

Sunday: Mostly Sunny
Mostly Sunny
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Monday

Monday: Sunny
Sunny
Monday
Night
Monday Night: Partly Cloudy
Partly Cloudy
Lo 25°F Hi 45°F Lo 26°F Hi 59°F Lo 32°F Hi 66°F Lo 40°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