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: 24-Oct-2026 @ 1:00pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 2.4°F than last hour.

51.6°F

Feels like:  49°F
24-hr diff: -25.9°FColder 25.9°F than yesterday at this time.
Cool
High Today
59.8°F
12:00 AM
Low Today
46.2°F
10:44 AM
Yest High
78.7°F
1:14 PM
Yest Low
58.1°F
11:21 PM
Sta* High
81.0°F
2014
Sta* Low
23.9°F
2020
* This Station's Records Since 11/2006
Sunny, Dry Sunny, Dry

Wind from N Wind:  N
6.4

Gusting to:
4.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
15.7 of 100
This
Afternoon
This Afternoon: Chance Rain Showers
Chance Rain Showers
Tonight

Tonight: Rain Showers Likely then Cloudy
Rain Showers Likely then Cloudy
Sunday

Sunday: Partly Sunny then Slight Chance Rain Showers
Partly Sunny then Slight Chance Rain Showers
Hi 53°F Lo 40°F Hi 59°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 0.4°F since last hour. 34.0°F
Last Hour: Decreased 0.4°F since last hour. -0.4°F
High 9:39 AM: 38.8°F
Low 12:29 PM: 32.3°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 44.3°F
Rain Today
rain graph

Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.00 in
Oct Rain: 0.53 in
Oct to Date
  Avg:10
0.70 in
Oct to Date
  Diff from Avg:10
Under 0.17 in for the month 0.17 in
Oct Avg: 0.89 in
Diff from Avg: Under 0.36 in for the month 0.36 in
Season:1 7.21 in
YTD
  Avg:11
13.01 in
YTD
  Diff from Avg:11
Under 5.8 in for the year 5.80 in
Last Rain
Time/Date:
15-Oct-2026
at 8:47 AM
60 rain days in 2026
3 days in October
8 days since last rain
Current: N  6.4 mph
1Hr Average: 6.1 mph
Wind Run: 47.00 miles
Wind Gust
Current: 4.0 mph
Today: 21.0 mph 11:25 AM
Month: 33.0 mph 15-Oct
Year: 43.0 mph 25-Feb
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
10 h 50 m 2 s
of Sunlight Yesterday
10 h 47 m 36 s
of Sunlight Today
Which is
2 min 26 sec shorter than
yesterday
10 h 45 m 10 s
of Sunlight Tomorrow
(Noon) graph (Midnight)
Legend

Waxing Gibbous
Waxing Gibbous, 14 days, 3 hours, 12 minutes in cycle
98%
Illuminated
Humidity Barometer
Current: Decreased 6% since last hour. 51%
Last Hour: Decreased 6% since last hour. 6%
High 9:30 AM: 71%
Low 12:00 AM: 39%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.031  inHg/hr 29.965 inHg
Last Hour: Falling
High 11:15 AM: 29.999
Low 12:07 AM: 29.548
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 6.0
Oct: 126.2
2026 to Date: 2571.6
Cooling Degree Days
2026 to Date: 1163.8
Today: 0.00 in
Yesterday: 0.00 in
Oct Snow: Under 3.78 in for the month 0.00 in
Oct Avg: 3.78 in
Diff from Avg: -3.78 in
Season Total:2 0.00 in
Snow Depth: 0.00 in
0 snow days in October
0 snow days this season.2
First Snow of Season:
8-Jan-2026
Average 1st Snow:
29 of Oct
Current: 49.4°F
Low 10:41 AM: 40.5°F
Yesterday: 58.1°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:

40


Good
Density:
1.24 kg/m3
Current UV Index Current Solar Energy9
2.7
Sunburn in
41 Minutes
Highest:
12:58 PM
2.7
670 W/m2
100%
W/m2 ⇒ SI
High Today:
11:53 AM
835  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 60.0°F
Sunrise: 7:19 am
Sunset: 6:08 pm
Moonrise: 5:11 pm
Moonset: 5:36 am
Full Moon: 25-Oct-2026
New Moon: 07:03 UTC
09-Nov-2026
Updated at Midnight
Current ET: 0.08 in
7-Days Rain: 0.00 in
7-Days ET: 0.80 in
7-Day:  0.799 in water in deficit of what evaporated in last 7 days. 0.799 in
October:  1.96 in water in deficit of what evaporated this month. 1.96 in
Support this Site!
Your donation helps support this site
HIGHS: LOWS:
104.4°F
25-Jul-2026
-14.6°F
2-Feb-2011
Daytime Records
  100.8°F°F
02-Aug-2026
  -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:76%
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 24 of just the month of October for this station since 2006.   11 Historical average rain this season to day 24 of October for this station since 2006.
 NWS Weather Forecast  -   Outlook This Afternoon & Tonight
This
Afternoon
This Afternoon: Chance Rain Showers
Chance Rain Showers

Hi 53°F
NWS forecast: A chance of rain showers after 3pm. Mostly cloudy, with a high near 53. Northeast wind around 9 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.
Tonight

Tonight: Rain Showers Likely then Cloudy
Rain Showers Likely then Cloudy

Lo 40°F
NWS forecast: Rain showers likely before midnight. Cloudy. Low around 40, with temperatures rising to around 43 overnight. East wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
 NWS Short Term Weather Forecast
Sunday

Sunday: Partly Sunny then Slight Chance Rain Showers
Partly Sunny then Slight Chance Rain Showers
Sunday
Night
Sunday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Monday

Monday: Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Mostly Sunny
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Sunny
Sunny
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday

Wednesday: Sunny
Sunny
Hi 59°F Lo 43°F Hi 62°F Lo 38°F Hi 67°F Lo 39°F Hi 67°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