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: 13-Jan-2026 @ 11:10pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 1.7°F than last hour.

44.4°F

Feels like:  42°F
24-hr diff: 7.7°FWarmer 7.7°F than yesterday at this time.
Cold
High Today
63.4°F
1:08 PM
Low Today
34.7°F
5:06 AM
Yest High
64.6°F
2:17 PM
Yest Low
31.4°F
1:38 AM
Sta* High
62.4°F
2022
Sta* Low
-8.9°F
2024
* This Station's Records Since 11/2006
Station Record High
Night time, Dry, Overcast Night time, Dry, Overcast

Wind from NNE Wind:  NNE
5.1

Gusting to:
3.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
5.2 of 100
Tonight

Tonight: Slight Chance Light Rain
Slight Chance Light Rain
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Lo 34°F Hi 55°F Lo 34°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 0.9°F since last hour. 33.0°F
Last Hour: Increased 0.9°F since last hour. +0.9°F
High 11:07 PM: 33.1°F
Low 3:10 PM: 19.8°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 39.9°F
Rain Today
rain graph

Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.19 in
Jan Rain: 0.19 in
Jan to Date
  Avg:10
0.19 in
Jan to Date
  Diff from Avg:10
No Change 0.00 in
Jan Avg: 0.42 in
Diff from Avg: Under 0.23 in for the month 0.23 in
Season:1 0.19 in
YTD
  Avg:11
0.19 in
YTD
  Diff from Avg:11
No Change 0.00 in
Last Rain
Time/Date:
9-Jan-2026
at 4:02 PM
2 rain days in 2026
2 days in January
3 days since last rain
Current: NNE  5.1 mph
1Hr Average: 6.8 mph
Wind Run: 98.71 miles
Wind Gust
Current: 3.0 mph
Today: 24.2 mph 1:21 PM
Month: 37.0 mph 5-Jan
Year: 37.0 mph 5-Jan
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
9 h 37 m 13 s
of Sunlight Yesterday
9 h 38 m 38 s
of Sunlight Today
Which is
1 min 25 sec longer than
yesterday
9 h 40 m 7 s
of Sunlight Tomorrow
(Noon) graph (Midnight)
Legend

Waning Crescent
Waning Crescent, 25 days, 6 hours, 22 minutes in cycle
18%
Illuminated
Humidity Barometer
Current: Increased 6% since last hour. 64%
Last Hour: Increased 6% since last hour. 6%
High 11:07 PM: 64%
Low 12:38 PM: 20%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Rising 0.021  inHg/hr 30.088 inHg
Last Hour: Rising slowly
High 11:09 PM: 30.088
Low 1:21 PM: 29.897
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 22.2
Jan: 300.9
2026 to Date: 300.1
Cooling Degree Days
2026 to Date: 0.0
Today: 0.00 in
Yesterday: 0.00 in
Jan Snow: Under 4.472 in for the month 2.30 in
Jan Avg: 6.77 in
Diff from Avg: -4.47 in
Season Total:2 9.50 in
Snow Depth: 0.00 in
2 snow days in January
5 snow days this season.2
First Snow of Season:
28-Nov-2025
Average 1st Snow:
29 of Oct
Current: 41.6°F
Low 5:11 AM: 30.0°F
Yesterday: 26.4°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:

41


Good
Density:
1.26 kg/m3
UV Summary/Forecast Solar Summary
High Today:   2.2 @ 12:13 PM
Jan-15

1.8
Jan-16

1.9
Jan-17

1.5
High Today:  
508 W/m2 @ 10:54 AM
Sun Hours Today:
02:57
   This Month: 60:15 Hrs
Rise: 7:19 am  Set: 4:58 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Evening
YTD Avg Temp: 42.2°F
Sunrise: 7:19 am
Sunset: 4:58 pm
Moonrise: 4:10 am
Moonset: 1:07 pm
Full Moon: 03-Jan-2026
New Moon: 19:53 UTC
18-Jan-2026
Updated at Midnight
Current ET: 0.08 in
7-Days Rain: 0.19 in
7-Days ET: 0.32 in
7-Day:  0.133 in water in deficit of what evaporated in last 7 days. 0.133 in
January:  0.39 in water in deficit of what evaporated this month. 0.39 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:4.8 | 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 14 of just the month of January for this station since 2006.   11 Historical average rain this season to day 14 of January for this station since 2006.
 NWS Weather Forecast  -   Outlook Tonight & Wednesday
Tonight

Tonight: Slight Chance Light Rain
Slight Chance Light Rain

Lo 34°F
NWS forecast: A slight chance of rain between 11pm and 5am. Mostly cloudy. Low around 34, with temperatures rising to around 38 overnight. North northwest wind 5 to 15 mph. Chance of precipitation is 20%.
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny

Hi 55°F
NWS forecast: Mostly sunny. High near 55, with temperatures falling to around 51 in the afternoon. West northwest wind around 7 mph.
 NWS Short Term Weather Forecast
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday

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

Friday: Mostly Sunny
Mostly Sunny
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday

Saturday: Sunny
Sunny
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Lo 34°F Hi 62°F Lo 26°F Hi 48°F Lo 24°F Hi 52°F Lo 30°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