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Adams County
 Details for Adams County Winter Weather Advisory  +2 additional alerts
 Thornton
 Details for Thornton Winter Weather Advisory  +1 additional alert
Winter Weather Advisory WINTER WEATHER ADVISORY - Adams County  - Thornton
Cold Weather Advisory COLD WEATHER ADVISORY - Adams County  - Thornton

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METRIC | IMPERIAL
Updated: 17-Jan-2025 @ 4:20pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 3.8°F than last hour.

30.0°F

Wind Chill:  22.0°F
Feels like:  22°F
24-hr diff: -26°FColder 26°F than yesterday at this time.
Uncomfortably Cold
High Today
49.4°F
12:27 PM 		Low Today
24.6°F
7:28 AM
Yest High
59.5°F
2:20 PM 		Yest Low
20.8°F
6:20 AM
Sta* High
59.0°F
2011 		Sta* Low
2.7°F
2008
* This Station's Records Since 11/2006
Overcast and gloomy, Dry Overcast and gloomy, Dry

Wind from N Wind:  N
8.6
Gusting to:
 7.0 mph
Current Snow Snow3:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
4.1 of 100
This
Afternoon
This Afternoon: Light Snow Likely
Light Snow Likely
Tonight

Tonight: Snow
Snow
Saturday

Saturday: Light Snow
Light Snow
Hi 50°F Lo 9°F Hi 16°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 3.3°F since last hour. 19.3°F
Last Hour: Decreased 3.3°F since last hour. -3.3°F
High 2:12 PM: 24.0°F
Low 2:56 AM: 0.4°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 26.7°F
Rain Today
rain graph
Melt Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.01 in
Jan Rain: 0.11 in
Jan to Date
  Avg:10 		0.21 in
Jan to Date
  Diff from Avg:10 		Under 0.1 in for the month 0.10 in
Jan Avg: 0.42 in
Diff from Avg: Under 0.31 in for the month 0.31 in
Season:1 0.11 in
YTD
  Avg:11 		0.21 in
YTD
  Diff from Avg:11 		Under 0.1 in for the year 0.10 in
Last Rain
Time/Date: 		10-Jan-2025
at 1:48 PM
2 rain days in 2025
2 days in January
7 days since last rain
Current: N  8.6 mph
1Hr Average: 4.1 mph
Wind Run: 70.11 miles
Wind Gust
Current: 7.0 mph
Today: 25.3 mph 1:16 PM
Month: 37.0 mph 11-Jan
Year: 37.0 mph 11-Jan
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
9 h 44 m 56 s
of Sunlight Yesterday
9 h 46 m 30 s
of Sunlight Today Which is
1 min 34 sec longer than
yesterday
9 h 48 m 7 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waning Gibbous
Waning Gibbous, 18 days, 0 hours, 54 minutes in cycle
85%
Illuminated
Humidity Barometer
Current: Increased 1% since last hour. 64%
Last Hour: Increased 1% since last hour. 1%
High 3:28 PM: 64%
Low 8:14 AM: 22%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Rising 0.048 inHg/hr 29.716 inHg
Last Hour: Rising
High 4:19 PM: 29.716
Low 7:41 AM: 29.412
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 21.1
Jan: 615.8
2025 to Date: 614.8
Cooling Degree Days
2025 to Date: 0.0
Today: 0.00 in
Yesterday: 0.00 in
Jan Snow: Under 3.814 in for the month 2.80 in
Jan Avg: 6.61 in
Diff from Avg: -3.81 in
Season Total:2 19.00 in
Snow Depth: 0.00 in
1 snow day in January
8 snow days this season.2
First Snow of Season:
6-Nov-2024
Average 1st Snow:
27 of Oct
Current: 22.0°F
Low 7:44 AM: 18.3°F
Yesterday: 17.4°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
54

Moderate
Density:
1.29 kg/m3
Current UV Index Current Solar Energy9
0.0
Sunburn in
720 Minutes 		Highest:
12:07 PM
2.5
5 W/m2
6%
W/m2 ⇒ SI 		High Today:
12:05 PM
 643  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 28.1°F
Sunrise: 7:18 am
Sunset: 5:00 pm
Moonrise: 8:09 pm
Moonset: 9:33 am
Full Moon: 13-Jan-2025
New Moon: 12:37 UTC
29-Jan-2025
Updated at Midnight
Current ET: 0.05 in
7-Days Rain: 0.01 in
7-Days ET: 0.26 in
7-Day: 0.246 in water in deficit of what evaporated in last 7 days. 0.246 in
January: 0.31 in water in deficit of what evaporated this month. 0.31 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:5 | 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.   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 17 of just the month of January for this station since 2006.   11 Historical average rain this season to day 17 of January for this station since 2006.
 NWS Weather Forecast  -   Outlook This Afternoon & Tonight
This
Afternoon
This Afternoon: Light Snow Likely
Light Snow Likely

Hi 50°F 		NWS forecast: Snow likely. Cloudy. High near 50, with temperatures falling to around 31 in the afternoon. Northeast wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
 Tonight

Tonight: Snow
Snow

Lo 9°F 		NWS forecast: Snow. Cloudy. Low around 9, with temperatures rising to around 11 overnight. Wind chill values as low as -1. North northeast wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
 NWS Short Term Weather Forecast
Saturday

Saturday: Light Snow
Light Snow
Saturday
Night
Saturday Night: Chance Light Snow then Mostly Cloudy
Chance Light Snow then Mostly Cloudy
Sunday

Sunday: Partly Sunny then Slight Chance Light Snow
Partly Sunny then Slight Chance Light Snow
Sunday
Night
Sunday Night: Light Snow Likely
Light Snow Likely
M.L. King
Jr. Day
M.L. King Jr. Day: Partly Sunny
Partly Sunny
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Hi 16°F Lo -2°F Hi 19°F Lo 0°F Hi 11°F Lo -7°F Hi 36°F
Click here for the complete forecast.
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