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Winter Weather Advisory WINTER WEATHER ADVISORY - Adams County  - Thornton

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METRIC | IMPERIAL
Updated: 01-Dec-2025 @ 2:35pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 1.2°F than last hour.

40.7°F

Feels like:  36°F
24-hr diff: 17.3°FWarmer 17.3°F than yesterday at this time.
Cold
High Today
42.3°F
12:55 PM 		Low Today
11.0°F
7:09 AM
Yest High
23.9°F
2:50 PM 		Yest Low
12.2°F
12:49 AM
Sta* High
62.5°F
2013 		Sta* Low
1.9°F
2006
* This Station's Records Since 11/2006
Sunny, Dry Sunny, Dry

Wind from ESE Wind:  ESE
7.3
Gusting to:
 5.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: MODERATE Current CBI
Fire Danger:
51.1 of 100
This
Afternoon
This Afternoon: Sunny
Sunny
Tonight

Tonight: Partly Cloudy
Partly Cloudy
Tuesday

Tuesday: Partly Sunny then Chance Rain And Snow
Partly Sunny then Chance Rain And Snow
Hi 37°F Lo 21°F Hi 46°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 0.6°F since last hour. 11.6°F
Last Hour: Increased 0.6°F since last hour. +0.6°F
High 10:10 AM: 19.5°F
Low 7:04 AM: 7.2°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 32.5°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.02 in
Dec Rain: 0.00 in
Dec to Date
  Avg:10 		0.01 in
Dec to Date
  Diff from Avg:10 		Under 0.01 in for the month 0.01 in
Dec Avg: 0.39 in
Diff from Avg: Under 0.39 in for the month 0.39 in
Season:1 11.66 in
YTD
  Avg:11 		13.97 in
YTD
  Diff from Avg:11 		Under 2.31 in for the year 2.31 in
Last Rain
Time/Date: 		21-Nov-2025
at 1:27 AM
75 rain days in 2025
0 days in December
1 day since last rain
Current: ESE  7.3 mph
1Hr Average: 4.6 mph
Wind Run: 25.70 miles
Wind Gust
Current: 5.0 mph
Today: 13.0 mph 2:32 PM
Month: 13.0 mph 1-Dec
Year: 47.2 mph 3-Mar
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
9 h 33 m 59 s
of Sunlight Yesterday
9 h 32 m 45 s
of Sunlight Today Which is
1 min 14 sec shorter than
yesterday
9 h 31 m 34 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waxing Gibbous
Waxing Gibbous, 11 days, 14 hours, 52 minutes in cycle
88%
Illuminated
Humidity Barometer
Current: Increased 2% since last hour. 30%
Last Hour: Increased 2% since last hour. 2%
High 4:44 AM: 89%
Low 1:36 PM: 27%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.02 inHg/hr 29.998 inHg
Last Hour: Falling slowly
High 7:55 AM: 30.159
Low 2:19 PM: 29.993
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 28.2
Dec: 28.2
2025 to Date: 4446.1
Cooling Degree Days
2025 to Date: 829.1
Today: 0.00 in
Yesterday: 0.00 in
Dec Snow: Under 8.976 in for the month 0.00 in
Dec Avg: 8.98 in
Diff from Avg: -8.98 in
Season Total:2 0.60 in
Snow Depth: 0.00 in
0 snow days in December
1 snow day this season.2
First Snow of Season:
28-Nov-2025
Average 1st Snow:
29 of Oct
Current: 35.8°F
Low 8:05 AM: 8.5°F
Yesterday: 3.6°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
41

Good
Density:
1.27 kg/m3
Current UV Index Current Solar Energy9
0.7
Sunburn in
160 Minutes 		Highest:
11:11 AM
1.7
257 W/m2
86%
W/m2 ⇒ SI 		High Today:
11:40 AM
 454  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 54.2°F
Sunrise: 7:02 am
Sunset: 4:35 pm
Moonrise: 2:08 pm
Moonset: 2:58 am
Full Moon: 04-Dec-2025
New Moon: 01:44 UTC
19-Dec-2025
Updated at Midnight
Current ET: 0.04 in
7-Days Rain: 0.02 in
7-Days ET: 0.20 in
7-Day: 0.181 in water in deficit of what evaporated in last 7 days. 0.181 in
December: No Change 0 in
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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:0 | S3C2:1 | Ajax 3.xx
ISS:Station 1 Low | CON:4.8 | RCP:97%
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 1 of just the month of December for this station since 2006.   11 Historical average rain this season to day 1 of December for this station since 2006.
 NWS Weather Forecast  -   Outlook This Afternoon & Tonight
This
Afternoon
This Afternoon: Sunny
Sunny

Hi 37°F 		NWS forecast: Sunny. High near 37, with temperatures falling to around 28 in the afternoon. Southeast wind around 7 mph.
 Tonight

Tonight: Partly Cloudy
Partly Cloudy

Lo 21°F 		NWS forecast: Partly cloudy. Low around 21, with temperatures rising to around 25 overnight. South southwest wind around 6 mph.
 NWS Short Term Weather Forecast
Tuesday

Tuesday: Partly Sunny then Chance Rain And Snow
Partly Sunny then Chance Rain And Snow
Tuesday
Night
Tuesday Night: Snow
Snow
Wednesday

Wednesday: Snow
Snow
Wednesday
Night
Wednesday Night: Partly Cloudy
Partly Cloudy
Thursday

Thursday: Sunny
Sunny
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday

Friday: Mostly Sunny
Mostly Sunny
Hi 46°F Lo 26°F Hi 28°F Lo 13°F Hi 37°F Lo 20°F Hi 44°F
Click here for the complete forecast.
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