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: 07-Jun-2025 @ 5:05am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 0.2°F than last hour.

45.8°F

24-hr diff: -5.4°FColder 5.4°F than yesterday at this time.
Cold
High Today
51.5°F
12:00 AM 		Low Today
44.9°F
4:31 AM
Yest High
70.9°F
3:11 PM 		Yest Low
51.2°F
5:03 AM
Sta* High
96.0°F
2024 		Sta* Low
43.0°F
2007
* This Station's Records Since 11/2006
Dawn, Dry, Clear skies Dawn, Dry, Clear skies

Wind from S Wind:  S
0.1
Gusting to:
 1.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
-1.2 of 100
Overnight

Overnight: Mostly Clear
Mostly Clear
Saturday

Saturday: Sunny
Sunny
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Lo 49°F Hi 81°F Lo 53°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 0.7°F since last hour. 41.9°F
Last Hour: Decreased 0.7°F since last hour. -0.7°F
High 12:00 AM: 47.5°F
Low 4:40 AM: 41.6°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 44.0°F
Rain Today
rain graph
Today: 0.00 in
Storm Rain: 0.69 in
Yesterday: 0.06 in
Last 7 Days: 1.13 in
Jun Rain: 1.13 in
Jun to Date
  Avg:10 		0.45 in
Jun to Date
  Diff from Avg:10 		Over 0.68 in for the month 0.68 in
Jun Avg: 1.43 in
Diff from Avg: Under 0.3 in for the month 0.30 in
Season:1 6.83 in
YTD
  Avg:11 		7.21 in
YTD
  Diff from Avg:11 		Under 0.38 in for the year 0.38 in
Last Rain
Time/Date: 		6-Jun-2025
at 5:02 PM
41 rain days in 2025
5 days in June
0 days since last rain
Current: S  0.1 mph
1Hr Average: 0.4 mph
Wind Run: 2.05 miles
Wind Gust
Current: 1.0 mph
Today: 6.0 mph 4:48 AM
Month: 27.0 mph 5-Jun
Year: 47.2 mph 3-Mar
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
14 h 57 m 27 s
of Sunlight Yesterday
14 h 58 m 16 s
of Sunlight Today Which is 49 sec longer than
yesterday
14 h 59 m 1 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waxing Gibbous
Waxing Gibbous, 11 days, 8 hours, 7 minutes in cycle
87%
Illuminated
Humidity Barometer
Current: Decreased 3% since last hour. 86%
Last Hour: Decreased 3% since last hour. 3%
High 1:46 AM: 91%
Low 12:00 AM: 86%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Rising 0.006 inHg/hr 29.693 inHg
Last Hour: Steady
High 12:01 AM: 29.740
Low 3:51 AM: 29.679
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 3.2
Jun: 37.4
2025 to Date: 3393.5
Cooling Degree Days
2025 to Date: 23.9
Today: 0.00 in
Yesterday: 0.00 in
Jun Snow: No Change 0.00 in
Jun Avg: 0.00 in
Diff from Avg: 0.00 in
Season Total:2 36.90 in
Snow Depth: 0.00 in
0 snow days in June
20 snow days this season.2
First Snow of Season:
6-Nov-2024
Average 1st Snow:
27 of Oct
Current: 45.8°F
Low 4:48 AM: 43.2°F
Yesterday: 51.2°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
50

Good
Density:
1.24 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   8.8 @ 12:31 PM
Jun-07

9.2 		Jun-08

9.7 		Jun-09

9.7
High Yest:   1197.0 @ 12:42 PM
Sun Hours Today:
00:00
   This Month: 17:18 Hrs
Rise: 5:31 am  Set: 8:25 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Early Morning
YTD Avg Temp: 43.6°F
Sunrise: 5:31 am
Sunset: 8:25 pm
Moonrise: 5:27 pm
Moonset: 3:00 am
Full Moon: 11-Jun-2025
New Moon: 10:32 UTC
25-Jun-2025
Updated at Midnight
Current ET: 0.01 in
7-Days Rain: 1.13 in
7-Days ET: 0.89 in
7-Day: 0.24 in water in excess of what evaporated in last 7 days. 0.24 in
June: 0.24 in water in excess of what evaporated this month. 0.24 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 7 of just the month of June for this station since 2006.   11 Historical average rain this season to day 7 of June for this station since 2006.
 NWS Weather Forecast  -   Outlook Overnight & Saturday
Overnight

Overnight: Mostly Clear
Mostly Clear

Lo 49°F 		NWS forecast: Mostly clear, with a low around 49. South southwest wind around 6 mph.
 Saturday

Saturday: Sunny
Sunny

Hi 81°F 		NWS forecast: Sunny, with a high near 81. West southwest wind 6 to 10 mph, with gusts as high as 17 mph.
 NWS Short Term Weather Forecast
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Sunday

Sunday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Sunday
Night
Sunday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Monday

Monday: Sunny then Slight Chance Showers And Thunderstorms
Sunny then Slight Chance Showers And T-Storms
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Sunny
Sunny
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy
Lo 53°F Hi 74°F Lo 53°F Hi 77°F Lo 54°F Hi 84°F Lo 58°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