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Winter Weather Advisory WINTER WEATHER ADVISORY - Adams County  - Thornton

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METRIC | IMPERIAL
Updated: 03-Dec-2025 @ 12:25pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 1.7°F than last hour.

28.1°F

Wind Chill:  22.2°F
Feels like:  22°F
24-hr diff: -19.2°FColder 19.2°F than yesterday at this time.
Uncomfortably Cold
High Today
33.2°F
12:00 AM 		Low Today
27.7°F
12:02 PM
Yest High
49.7°F
1:45 PM 		Yest Low
23.0°F
6:19 AM
Sta* High
70.2°F
2010 		Sta* Low
2.8°F
2009
* This Station's Records Since 11/2006
Overcast and gloomy, Dry Overcast and gloomy, Dry

Wind from N Wind:  N
5.3
Gusting to:
 1.0 mph
Current Snow Snow3:
4.40 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
-2.3 of 100
Today

Today: Snow
Snow
Tonight

Tonight: Slight Chance Light Snow then Patchy Fog
Slight Chance Light Snow then Patchy Fog
Thursday

Thursday: Patchy Fog then Sunny
Patchy Fog then Sunny
Hi 32°F Lo 11°F Hi 36°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 1.9°F since last hour. 25.8°F
Last Hour: Decreased 1.9°F since last hour. -1.9°F
High 12:22 AM: 30.6°F
Low 12:02 PM: 24.9°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 27.3°F
Rain Today
rain graph
Melt Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.02 in
Dec Rain: 0.00 in
Dec to Date
  Avg:10 		0.02 in
Dec to Date
  Diff from Avg:10 		Under 0.02 in for the month 0.02 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 		13.98 in
YTD
  Diff from Avg:11 		Under 2.32 in for the year 2.32 in
Last Rain
Time/Date: 		21-Nov-2025
at 1:27 AM
75 rain days in 2025
0 days in December
3 days since last rain
Current: N  5.3 mph
1Hr Average: 4.2 mph
Wind Run: 35.77 miles
Wind Gust
Current: 1.0 mph
Today: 14.0 mph 12:53 AM
Month: 19.0 mph 2-Dec
Year: 47.2 mph 3-Mar
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
9 h 31 m 34 s
of Sunlight Yesterday
9 h 30 m 26 s
of Sunlight Today Which is
1 min 8 sec shorter than
yesterday
9 h 29 m 21 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waxing Gibbous
Waxing Gibbous, 13 days, 12 hours, 38 minutes in cycle
98%
Illuminated
Humidity Barometer
Current: Decreased 1% since last hour. 91%
Last Hour: Decreased 1% since last hour. 1%
High 7:39 AM: 94%
Low 12:00 AM: 89%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Rising 0.007 inHg/hr 30.007 inHg
Last Hour: Steady
High 12:18 PM: 30.011
Low 12:00 AM: 29.814
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 17.4
Dec: 85.2
2025 to Date: 4503.8
Cooling Degree Days
2025 to Date: 829.1
Today: 4.40 in
Yesterday: 0.00 in
Dec Snow: Under 4.576 in for the month 4.40 in
Dec Avg: 8.98 in
Diff from Avg: -4.58 in
Season Total:2 5.00 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: 22.2°F
Low 12:01 PM: 19.0°F
Yesterday: 16.3°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
53

Moderate
Density:
1.30 kg/m3
Current UV Index Current Solar Energy9
0.0
Sunburn in
720 Minutes 		Highest:
12:00 AM
0.0
40 W/m2
9%
W/m2 ⇒ SI 		High Today:
12:03 PM
 42  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 54.0°F
Sunrise: 7:04 am
Sunset: 4:34 pm
Moonrise: 3:21 pm
Moonset: 5:36 am
Full Moon: 04-Dec-2025
New Moon: 01:44 UTC
19-Dec-2025
Updated at Midnight
Current ET: 0.01 in
7-Days Rain: 0.02 in
7-Days ET: 0.22 in
7-Day: 0.2 in water in deficit of what evaporated in last 7 days. 0.2 in
December: 0.08 in water in deficit of what evaporated this month. 0.08 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:18 | S3C2:1 | Ajax 3.xx
ISS:Station 1 Low | CON:4.8 | RCP:43%
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 3 of just the month of December for this station since 2006.   11 Historical average rain this season to day 3 of December for this station since 2006.
 NWS Weather Forecast  -   Outlook Today & Tonight
Today

Today: Snow
Snow

Hi 32°F 		NWS forecast: Snow. Cloudy. High near 32, with temperatures falling to around 29 in the afternoon. North northeast wind 3 to 9 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
 Tonight

Tonight: Slight Chance Light Snow then Patchy Fog
Slight Chance Light Snow then Patchy Fog

Lo 11°F 		NWS forecast: A slight chance of snow before 8pm, then patchy fog. Mostly cloudy. Low around 11, with temperatures rising to around 13 overnight. South wind around 5 mph. Chance of precipitation is 20%. New snow accumulation of less than half an inch possible.
 NWS Short Term Weather Forecast
Thursday

Thursday: Patchy Fog then Sunny
Patchy Fog then Sunny
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday

Friday: Mostly Sunny
Mostly Sunny
Friday
Night
Friday Night: Partly Cloudy then Slight Chance Snow Showers
Partly Cloudy then Slight Chance Snow Showers
Saturday

Saturday: Slight Chance Snow Showers
Slight Chance Snow Showers
Saturday
Night
Saturday Night: Slight Chance Rain And Snow Showers
Slight Chance Rain And Snow Showers
Sunday

Sunday: Sunny
Sunny
Hi 36°F Lo 19°F Hi 38°F Lo 23°F Hi 44°F Lo 24°F Hi 44°F
Click here for the complete forecast.
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