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: 21-Dec-2024 @ 9:10am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 7.5°F than last hour.

40.6°F

Feels like:  36°F
24-hr diff: 6°FWarmer 6°F than yesterday at this time.
Cold
High Today
40.6°F
9:09 AM 		Low Today
26.9°F
5:58 AM
Yest High
67.4°F
12:58 PM 		Yest Low
22.9°F
3:07 AM
Sta* High
62.0°F
2019 		Sta* Low
-7.1°F
2022
* This Station's Records Since 11/2006
Sunny, Dry Sunny, Dry

Wind from SSE Wind:  SSE
7.0
Gusting to:
 9.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
34.7 of 100
Today

Today: Sunny
Sunny
Tonight

Tonight: Partly Cloudy
Partly Cloudy
Sunday

Sunday: Partly Sunny
Partly Sunny
Hi 61°F Lo 34°F Hi 61°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 1.4°F since last hour. 16.3°F
Last Hour: Increased 1.4°F since last hour. +1.4°F
High 9:09 AM: 16.3°F
Low 12:04 AM: 14.2°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 33.3°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.00 in
Dec Rain: 0.04 in
Dec to Date
  Avg:10 		0.23 in
Dec to Date
  Diff from Avg:10 		Under 0.19 in for the month 0.19 in
Dec Avg: 0.40 in
Diff from Avg: Under 0.36 in for the month 0.36 in
Season:1 14.40 in
YTD
  Avg:11 		14.32 in
YTD
  Diff from Avg:11 		Over 0.08 in for the year 0.08 in
Last Rain
Time/Date: 		9-Dec-2024
at 7:28 PM
69 rain days in 2024
1 day in December
11 days since last rain
Current: SSE  7.0 mph
1Hr Average: 4.6 mph
Wind Run: 18.50 miles
Wind Gust
Current: 9.0 mph
Today: 12.0 mph 9:01 AM
Month: 32.0 mph 17-Dec
Year: 53.0 mph 26-Jul
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
9 h 23 m 19 s
of Sunlight Yesterday
9 h 23 m 18 s
of Sunlight Today Which is 1 sec shorter than
yesterday
9 h 23 m 22 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waning Gibbous
Waning Gibbous, 20 days, 9 hours, 52 minutes in cycle
63%
Illuminated
Humidity Barometer
Current: Decreased 10% since last hour. 37%
Last Hour: Decreased 10% since last hour. 10%
High 5:50 AM: 60%
Low 12:00 AM: 36%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.01 inHg/hr 30.377 inHg
Last Hour: Steady
High 5:58 AM: 30.414
Low 12:23 AM: 30.334
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 11.8
Dec: 556.4
2024 to Date: 4851.9
Cooling Degree Days
2024 to Date: 1004.5
Today: 0.00 in
Yesterday: 0.00 in
Dec Snow: Under 8.47 in for the month 0.90 in
Dec Avg: 9.37 in
Diff from Avg: -8.47 in
Season Total:2 15.10 in
Snow Depth: 0.00 in
1 snow day in December
6 snow days this season.2
First Snow of Season:
6-Nov-2024
Average 1st Snow:
26 of Oct
Current: 35.8°F
Low 6:23 AM: 23.1°F
Yesterday: 18.0°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
56

Moderate
Density:
1.29 kg/m3
Current UV Index Current Solar Energy9
0.7
Sunburn in
160 Minutes 		Highest:
9:04 AM
0.7
243 W/m2
100%
W/m2 ⇒ SI 		High Today:
9:09 AM
 243  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Morning
YTD Avg Temp: 54.1°F
Sunrise: 7:18 am
Sunset: 4:38 pm
Moonrise: 10:23 pm
Moonset: 11:30 am
Full Moon: 15-Dec-2024
New Moon: 22:27 UTC
30-Dec-2024
Updated at Midnight
Current ET: 0.02 in
7-Days Rain: 0.00 in
7-Days ET: 0.41 in
7-Day: 0.406 in water in deficit of what evaporated in last 7 days. 0.406 in
December: 0.91 in water in deficit of what evaporated this month. 0.91 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:Station 1 Low | CON:4.8 | RCP:68%
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 21 of just the month of December for this station since 2006.   11 Historical average rain this season to day 21 of December for this station since 2006.
 NWS Weather Forecast  -   Outlook Today & Tonight
Today

Today: Sunny
Sunny

Hi 61°F 		NWS forecast: Sunny. High near 61, with temperatures falling to around 53 in the afternoon. Southeast wind 2 to 6 mph.
 Tonight

Tonight: Partly Cloudy
Partly Cloudy

Lo 34°F 		NWS forecast: Partly cloudy. Low around 34, with temperatures rising to around 36 overnight. Southwest wind 3 to 7 mph.
 NWS Short Term Weather Forecast
Sunday

Sunday: Partly Sunny
Partly Sunny
Sunday
Night
Sunday Night: Mostly Cloudy
Mostly Cloudy
Monday

Monday: Mostly Cloudy
Mostly Cloudy
Monday
Night
Monday Night: Mostly Cloudy
Mostly Cloudy
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Tuesday
Night
Tuesday Night: Mostly Cloudy
Mostly Cloudy
Christmas
Day
Christmas Day: Partly Sunny
Partly Sunny
Hi 61°F Lo 34°F Hi 55°F Lo 28°F Hi 53°F Lo 28°F Hi 50°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