Navigation

External Links

ThorntonWeather.com on Twitter

ThorntonWeather.com on Facebook

Alerts

Adams County
 Details for Adams County Red Flag Warning  +2 additional alerts
 Thornton
 Details for Thornton Red Flag Warning  +1 additional alert
Red Flag Warning RED FLAG WARNING - Adams County  - Thornton
High Wind Watch HIGH WIND WATCH - 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: 14-Mar-2026 @ 3:10am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 5.8°F than last hour.

56.6°F

24-hr diff: -2.2°FColder 2.2°F than yesterday at this time.
Cool
High Today
58.5°F
3:04 AM 		Low Today
48.5°F
2:35 AM
Yest High
68.5°F
2:28 PM 		Yest Low
55.1°F
11:59 PM
Sta* High
75.6°F
2017 		Sta* Low
20.1°F
2009
* This Station's Records Since 11/2006
Night time, Dry, Mostly cloudy Night time, Dry, Mostly cloudy

Wind from E Wind:  E
4.2
Gusting to:
 3.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: HIGH Current CBI
Fire Danger:
82.2 of 100
Overnight

Overnight: Mostly Cloudy
Mostly Cloudy
Saturday

Saturday: Patchy Blowing Dust
Patchy Blowing Dust
Saturday
Night
Saturday Night: Patchy Blowing Dust then Light Snow And Patchy Blowing Snow
Patchy Blowing Dust then Light Snow And Patchy Blowing Snow
Lo 46°F Hi 76°F Lo 26°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 3.4°F since last hour. 18.1°F
Last Hour: Decreased 3.4°F since last hour. -3.4°F
High 2:55 AM: 25.3°F
Low 3:09 AM: 18.1°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 43.1°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.02 in
Mar Rain: 0.62 in
Mar to Date
  Avg:10 		0.43 in
Mar to Date
  Diff from Avg:10 		Over 0.19 in for the month 0.19 in
Mar Avg: 1.25 in
Diff from Avg: Under 0.63 in for the month 0.63 in
Season:1 0.88 in
YTD
  Avg:11 		1.40 in
YTD
  Diff from Avg:11 		Under 0.52 in for the year 0.52 in
Last Rain
Time/Date: 		6-Mar-2026
at 8:56 PM
7 rain days in 2026
2 days in March
3 days since last rain
Current: E  4.2 mph
1Hr Average: 1.5 mph
Wind Run: 7.44 miles
Wind Gust
Current: 3.0 mph
Today: 19.6 mph 2:54 AM
Month: 43.0 mph 12-Mar
Year: 43.0 mph 25-Feb
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
11 h 50 m 51 s
of Sunlight Yesterday
11 h 53 m 30 s
of Sunlight Today Which is
2 min 39 sec longer than
yesterday
11 h 56 m 8 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waning Crescent
Waning Crescent, 24 days, 21 hours, 11 minutes in cycle
21%
Illuminated
Humidity Barometer
Current: Decreased 9% since last hour. 22%
Last Hour: Decreased 9% since last hour. 9%
High 1:34 AM: 35%
Low 3:00 AM: 22%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.015 inHg/hr 29.460 inHg
Last Hour: Falling slowly
High 12:00 AM: 29.510
Low 3:09 AM: 29.460
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 1.7
Mar: 196.1
2026 to Date: 1643.7
Cooling Degree Days
2026 to Date: 0.0
Today: 0.00 in
Yesterday: 0.00 in
Mar Snow: Under 5.097 in for the month 5.10 in
Mar Avg: 10.20 in
Diff from Avg: -5.10 in
Season Total:2 16.90 in
Snow Depth: 0.00 in
1 snow day in March
9 snow days this season.2
First Snow of Season:
28-Nov-2025
Average 1st Snow:
29 of Oct
Current: 56.4°F
Low 1:33 AM: 46.8°F
Yesterday: 55.1°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
33

Good
Density:
1.21 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   3.8 @ 12:30 PM
Mar-14

5.0 		Mar-15

3.6 		Mar-16

4.4
High Yest:   566.0 @ 12:29 PM
Sun Hours Today:
00:00
   This Month: 41:20 Hrs
Rise: 7:12 am  Set: 7:04 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Night
YTD Avg Temp: 41.3°F
Sunrise: 7:12 am
Sunset: 7:04 pm
Moonrise: 5:00 am
Moonset: 2:27 pm
Full Moon: 03-Mar-2026
New Moon: 01:24 UTC
18-Mar-2026
Updated at Midnight
Current ET: 0.05 in
7-Days Rain: 0.02 in
7-Days ET: 1.06 in
7-Day: 1.039 in water in deficit of what evaporated in last 7 days. 1.039 in
March: 0.93 in water in deficit of what evaporated this month. 0.93 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:100%
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 March for this station since 2006.   11 Historical average rain this season to day 14 of March for this station since 2006.
 NWS Weather Forecast  -   Outlook Overnight & Saturday
Overnight

Overnight: Mostly Cloudy
Mostly Cloudy

Lo 46°F 		NWS forecast: Mostly cloudy. Low around 46, with temperatures rising to around 48 overnight. Southwest wind around 10 mph, with gusts as high as 16 mph.
 Saturday

Saturday: Patchy Blowing Dust
Patchy Blowing Dust

Hi 76°F 		NWS forecast: Patchy blowing dust after 11am. Partly sunny. High near 76, with temperatures falling to around 73 in the afternoon. West southwest wind 10 to 32 mph, with gusts as high as 48 mph.
 NWS Short Term Weather Forecast
Saturday
Night
Saturday Night: Patchy Blowing Dust then Light Snow And Patchy Blowing Snow
Patchy Blowing Dust then Light Snow And Patchy Blowing Snow
Sunday

Sunday: Slight Chance Light Snow
Slight Chance Light Snow
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Monday

Monday: Partly Sunny
Partly Sunny
Monday
Night
Monday Night: Mostly Cloudy
Mostly Cloudy
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy
Lo 26°F Hi 34°F Lo 16°F Hi 52°F Lo 37°F Hi 73°F Lo 46°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