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: 02-Aug-2025 @ 1:45am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 1.8°F than last hour.

56.6°F

24-hr diff: -0.9°FColder 0.9°F than yesterday at this time.
Cool
High Today
60.5°F
12:00 AM 		Low Today
56.6°F
1:44 AM
Yest High
87.7°F
4:23 PM 		Yest Low
54.6°F
6:03 AM
Sta* High
99.3°F
2024 		Sta* Low
51.0°F
2014
* This Station's Records Since 11/2006
Night time, Dry, A few clouds Night time, Dry, A few clouds

Wind from N Wind:  N
0.1
Gusting to:
 0.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
-0.3 of 100
This
Afternoon
This Afternoon: Areas Of Smoke
Areas Of Smoke
Tonight

Tonight: Areas Of Smoke
Areas Of Smoke
Saturday

Saturday: Areas Of Smoke then Slight Chance Showers And Thunderstorms
Areas Of Smoke then Slight Chance Showers And T-Storms
Hi 88°F Lo 58°F Hi 91°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 0.5°F since last hour. 51.5°F
Last Hour: Decreased 0.5°F since last hour. -0.5°F
High 12:22 AM: 52.5°F
Low 1:44 AM: 51.5°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 53.9°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.00 in
Aug Rain: 0.00 in
Aug to Date
  Avg:10 		0.08 in
Aug to Date
  Diff from Avg:10 		Under 0.08 in for the month 0.08 in
Aug Avg: 1.10 in
Diff from Avg: Under 1.1 in for the month 1.10 in
Season:1 8.43 in
YTD
  Avg:11 		10.13 in
YTD
  Diff from Avg:11 		Under 1.7 in for the year 1.70 in
Last Rain
Time/Date: 		23-Jul-2025
at 10:09 PM
53 rain days in 2025
0 days in August
9 days since last rain
Current: N  0.1 mph
1Hr Average: 5.2 mph
Wind Run: 7.15 miles
Wind Gust
Current: 0.0 mph
Today: 12.0 mph 12:41 AM
Month: 17.0 mph 1-Aug
Year: 47.2 mph 3-Mar
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
14 h 14 m 16 s
of Sunlight Yesterday
14 h 12 m 16 s
of Sunlight Today Which is
2 min 0 sec shorter than
yesterday
14 h 10 m 14 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waxing Gibbous
Waxing Gibbous, 8 days, 12 hours, 35 minutes in cycle
58%
Illuminated
Humidity Barometer
Current: Increased 4% since last hour. 83%
Last Hour: Increased 4% since last hour. 4%
High 1:38 AM: 84%
Low 12:00 AM: 74%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.005 inHg/hr 29.877 inHg
Last Hour: Steady
High 12:41 AM: 29.883
Low 1:12 AM: 29.867
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 0.4
Aug: 0.4
2025 to Date: 3399.8
Cooling Degree Days
2025 to Date: 526.0
Today: 0.00 in
Yesterday: 0.00 in
Aug Snow: No Change 0.00 in
Aug Avg: 0.00 in
Diff from Avg: 0.00 in
Season Total:2 0.00 in
Snow Depth: 0.00 in
0 snow days in August
0 snow days this season.2
First Snow of Season:
7-Jan-2025
Average 1st Snow:
27 of Oct
Current: 56.6°F
Low 1:44 AM: 56.6°F
Yesterday: 54.6°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
46

Good
Density:
1.22 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   7.2 @ 12:59 PM
Aug-02

10.2 		Aug-03

10.0 		Aug-04

10.0
High Yest:   895.0 @ 1:20 PM
Sun Hours Today:
00:00
   This Month: 05:47 Hrs
Rise: 5:59 am  Set: 8:12 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Night
YTD Avg Temp: 51.5°F
Sunrise: 5:59 am
Sunset: 8:12 pm
Moonrise: 3:09 pm
Moonset: 11:52 pm
Full Moon: 09-Aug-2025
New Moon: 06:07 UTC
23-Aug-2025
Updated at Midnight
Current ET: 0.03 in
7-Days Rain: 0.00 in
7-Days ET: 1.31 in
7-Day: 1.307 in water in deficit of what evaporated in last 7 days. 1.307 in
August: 0.19 in water in deficit of what evaporated this month. 0.19 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 2 of just the month of August for this station since 2006.   11 Historical average rain this season to day 2 of August for this station since 2006.
 NWS Weather Forecast  -   Outlook This Afternoon & Tonight
This
Afternoon
This Afternoon: Areas Of Smoke
Areas Of Smoke

Hi 88°F 		NWS forecast: Areas of smoke and a slight chance of showers and thunderstorms. Partly sunny. High near 88, with temperatures falling to around 82 in the afternoon. South wind around 10 mph, with gusts as high as 17 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
 Tonight

Tonight: Areas Of Smoke
Areas Of Smoke

Lo 58°F 		NWS forecast: Areas of smoke and a slight chance of showers and thunderstorms. Partly cloudy, with a low around 58. South southwest wind 5 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 20%.
 NWS Short Term Weather Forecast
Saturday

Saturday: Areas Of Smoke then Slight Chance Showers And Thunderstorms
Areas Of Smoke then Slight Chance Showers And T-Storms
Saturday
Night
Saturday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Sunday

Sunday: Sunny
Sunny
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday

Monday: Sunny
Sunny
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Hi 91°F Lo 59°F Hi 89°F Lo 60°F Hi 95°F Lo 61°F Hi 98°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