Heat Advisory HEAT ADVISORY - Adams County  - Thornton

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-Jul-2025 @ 8:50pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 3.5°F than last hour.

78.1°F

24-hr diff: 8.2°FWarmer 8.2°F than yesterday at this time.
Comfortable
High Today
92.8°F
4:23 PM
Low Today
56.3°F
5:49 AM
Yest High
89.2°F
2:23 PM
Yest Low
57.5°F
6:05 AM
Sta* High
98.6°F
2018
Sta* Low
53.9°F
2009
* This Station's Records Since 11/2006
Dusk, Dry, Mostly cloudy Dusk, Dry, Mostly cloudy

Wind from SE Wind:  SE
2.2

Gusting to:
4.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
48.7 of 100
This
Afternoon
This Afternoon: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Mostly Clear
Slight Chance Showers And T-Storms then Mostly Clear
Tuesday

Tuesday: Sunny then Slight Chance Showers And Thunderstorms
Sunny then Slight Chance Showers And T-Storms
Hi 93°F Lo 59°F Hi 96°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 0.3°F since last hour. 47.4°F
Last Hour: Increased 0.3°F since last hour. +0.3°F
High 11:52 AM: 57.7°F
Low 5:24 PM: 36.4°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 61.4°F
Rain Today
rain graph

Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.22 in
Jul Rain: 0.22 in
Jul to Date
  Avg:10
0.49 in
Jul to Date
  Diff from Avg:10
Under 0.27 in for the month 0.27 in
Jul Avg: 1.90 in
Diff from Avg: Under 1.68 in for the month 1.68 in
Season:1 8.03 in
YTD
  Avg:11
8.71 in
YTD
  Diff from Avg:11
Under 0.68 in for the year 0.68 in
Last Rain
Time/Date:
5-Jul-2025
at 3:41 PM
48 rain days in 2025
2 days in July
1 day since last rain
Current: SE  2.2 mph
1Hr Average: 5.7 mph
Wind Run: 67.26 miles
Wind Gust
Current: 4.0 mph
Today: 24.2 mph 2:11 PM
Month: 33.0 mph 6-Jul
Year: 47.2 mph 3-Mar
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
14 h 53 m 15 s
of Sunlight Yesterday
14 h 52 m 18 s
of Sunlight Today
Which is 57 sec shorter than
yesterday
14 h 51 m 19 s
of Sunlight Tomorrow
(Noon) graph (Midnight)
Legend

Waxing Gibbous
Waxing Gibbous, 12 days, 16 hours, 21 minutes in cycle
93%
Illuminated
Humidity Barometer
Current: Increased 4% since last hour. 34%
Last Hour: Increased 4% since last hour. 4%
High 6:43 AM: 87%
Low 4:18 PM: 15%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Rising 0.025  inHg/hr 29.624 inHg
Last Hour: Rising slowly
High 12:32 AM: 29.688
Low 4:53 PM: 29.562
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Cooling Degree Days Snow3 Heat Index Air
Today: 2.3
Jul: 63.9
2025 to Date: 270.5
Heating Degree Days
2025 to Date: 3401.4
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:
7-Jan-2025
Average 1st Snow:
27 of Oct
Current: 78.4°F
High 1:21pm: 89.4°F
Yesterday: 88.3°F
Record: 102.9°F
8-Jul-2021
Quality
Index6:

58


Moderate
Density:
1.16 kg/m3
UV Summary/Forecast Solar Summary
High Today:   9.0 @ 12:46 PM
Jul-08

10.8
Jul-09

10.4
Jul-10

10.9
High Today:  
958 W/m2 @ 12:28 PM
Sun Hours Today:
07:31
   This Month: 58:27 Hrs
Rise: 5:39 am  Set: 8:30 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Evening
YTD Avg Temp: 48.4°F
Sunrise: 5:39 am
Sunset: 8:30 pm
Moonrise: 6:28 pm
Moonset: 3:12 am
Full Moon: 10-Jul-2025
New Moon: 19:12 UTC
24-Jul-2025
Updated at Midnight
Current ET: 0.30 in
7-Days Rain: 0.22 in
7-Days ET: 1.67 in
7-Day:  1.445 in water in deficit of what evaporated in last 7 days. 1.445 in
July:  1.44 in water in deficit of what evaporated this month. 1.44 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 July for this station since 2006.   11 Historical average rain this season to day 7 of July for this station since 2006.
 NWS Weather Forecast  -   Outlook This Afternoon & Tonight
This
Afternoon
This Afternoon: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Hi 93°F
NWS forecast: A chance of showers and thunderstorms. Some of the storms could be severe. Partly sunny. High near 93, with temperatures falling to around 88 in the afternoon. Northeast wind 7 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 30%.
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Mostly Clear
Slight Chance Showers And T-Storms then Mostly Clear

Lo 59°F
NWS forecast: A slight chance of showers and thunderstorms before 8pm. Some of the storms could be severe. Mostly clear. Low around 59, with temperatures rising to around 61 overnight. North northeast wind 3 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 20%.
 NWS Short Term Weather Forecast
Tuesday

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

Wednesday: Sunny
Sunny
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday

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

Friday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Hi 96°F Lo 62°F Hi 101°F Lo 67°F Hi 98°F Lo 62°F Hi 85°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