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: 08-Jul-2026 @ 10:45am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 6.3°F than last hour.

86.8°F

Heat Index:  84.3°F
Feels like:  84°F
24-hr diff: 5.4°FWarmer 5.4°F than yesterday at this time.
Warm
High Today
88.4°F
10:31 AM 		Low Today
62.9°F
5:43 AM
Yest High
93.6°F
1:17 PM 		Yest Low
63.7°F
5:52 AM
Sta* High
102.7°F
2021 		Sta* Low
51.6°F
2024
* This Station's Records Since 11/2006
Partly cloudy, Dry Partly cloudy, Dry

Wind from WNW Wind:  WNW
4.2
Gusting to:
 2.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: MODERATE Current CBI
Fire Danger:
58.8 of 100
Today

Today: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Tonight

Tonight: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy
Thursday

Thursday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Hi 91°F Lo 61°F Hi 90°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 0.8°F since last hour. 52.5°F
Last Hour: Increased 0.8°F since last hour. +0.8°F
High 7:36 AM: 55.3°F
Low 1:23 AM: 48.3°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 66.7°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.00 in
Jul Rain: 0.00 in
Jul to Date
  Avg:10 		0.57 in
Jul to Date
  Diff from Avg:10 		Under 0.57 in for the month 0.57 in
Jul Avg: 1.83 in
Diff from Avg: Under 1.83 in for the month 1.83 in
Season:1 4.67 in
YTD
  Avg:11 		8.62 in
YTD
  Diff from Avg:11 		Under 3.95 in for the year 3.95 in
Last Rain
Time/Date: 		26-Jun-2026
at 2:24 PM
35 rain days in 2026
0 days in July
11 days since last rain
Current: WNW  4.2 mph
1Hr Average: 1.9 mph
Wind Run: 20.07 miles
Wind Gust
Current: 2.0 mph
Today: 9.2 mph 2:06 AM
Month: 27.0 mph 7-Jul
Year: 43.0 mph 25-Feb
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
14 h 52 m 32 s
of Sunlight Yesterday
14 h 51 m 34 s
of Sunlight Today Which is 58 sec shorter than
yesterday
14 h 50 m 32 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waning Crescent
Waning Crescent, 23 days, 13 hours, 54 minutes in cycle
39%
Illuminated
Humidity Barometer
Current: Decreased 6% since last hour. 31%
Last Hour: Decreased 6% since last hour. 6%
High 5:36 AM: 67%
Low 10:40 AM: 27%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.01 inHg/hr 29.588 inHg
Last Hour: Steady
High 8:22 AM: 29.618
Low 12:14 AM: 29.552
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Cooling Degree Days Snow3 Heat Index Air
Today: 2.0
Jul: 79.9
2026 to Date: 329.4
Heating Degree Days
2026 to Date: 2415.6
Today: 0.00 in
Yesterday: 0.00 in
Jul Snow: No Change 0.00 in
Jul 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 July
0 snow days this season.2
First Snow of Season:
8-Jan-2026
Average 1st Snow:
29 of Oct
Current: 84.3°F
High 10:31am: 86.3°F
Yesterday: 90.9°F
Record: 102.9°F
8-Jul-2021
Quality
Index6:
75

Moderate
Density:
1.14 kg/m3
Current UV Index Current Solar Energy9
3.6
Sunburn in
31 Minutes 		Highest:
10:26 AM
6.8
366 W/m2
44%
W/m2 ⇒ SI 		High Today:
10:30 AM
 988  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Morning
YTD Avg Temp: 53.6°F
Sunrise: 5:38 am
Sunset: 8:30 pm
Moonrise: 12:30 am
Moonset: 2:23 pm
Full Moon: 29-Jun-2026
New Moon: 09:44 UTC
14-Jul-2026
Updated at Midnight
Current ET: 0.18 in
7-Days Rain: 0.00 in
7-Days ET: 2.05 in
7-Day: 2.051 in water in deficit of what evaporated in last 7 days. 2.051 in
July: 2.05 in water in deficit of what evaporated this month. 2.05 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:5 | 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.   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 8 of just the month of July for this station since 2006.   11 Historical average rain this season to day 8 of July for this station since 2006.
 NWS Weather Forecast  -   Outlook Today & Tonight
Today

Today: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms

Hi 91°F 		NWS forecast: A chance of showers and thunderstorms after 1pm. Mostly sunny. High near 91, with temperatures falling to around 86 in the afternoon. North northeast wind 3 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
 Tonight

Tonight: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy

Lo 61°F 		NWS forecast: A chance of showers and thunderstorms before 10pm. Partly cloudy. Low around 61, with temperatures rising to around 64 overnight. West southwest wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
 NWS Short Term Weather Forecast
Thursday

Thursday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Thursday
Night
Thursday Night: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy
Friday

Friday: Sunny
Sunny
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Saturday

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

Sunday: Sunny
Sunny
Hi 90°F Lo 60°F Hi 89°F Lo 61°F Hi 94°F Lo 65°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