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: 17-Feb-2025 @ 3:40am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 2.7°F than last hour.

19.7°F

Wind Chill:  15.4°F
Feels like:  15°F
24-hr diff: 14.4°FWarmer 14.4°F than yesterday at this time.
Uncomfortably Cold
High Today
19.9°F
12:40 AM
Low Today
16.7°F
2:52 AM
Yest High
31.2°F
2:33 PM
Yest Low
4.3°F
4:18 AM
Sta* High
67.6°F
2017
Sta* Low
8.7°F
2022
* This Station's Records Since 11/2006
Night time, Dry, A few clouds Night time, Dry, A few clouds

Wind from SW Wind:  SW
3.0

Gusting to:
3.0 mph
Current Snow Snow3:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
-2.1 of 100
Overnight

Overnight: Patchy Fog
Patchy Fog
Washington's
Birthday
Washington's Birthday: Chance Light Snow
Chance Light Snow
Monday
Night
Monday Night: Light Snow Likely
Light Snow Likely
Lo 16°F Hi 33°F Lo 11°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 2.3°F since last hour. 16.2°F
Last Hour: Increased 2.3°F since last hour. +2.3°F
High 12:40 AM: 16.4°F
Low 2:46 AM: 13.6°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 18.8°F
Rain Today
rain graph

Melt Today: 0.00 in
Yesterday: 0.01 in
Last 7 Days: 0.08 in
Feb Rain: 0.08 in
Feb to Date
  Avg:10
0.43 in
Feb to Date
  Diff from Avg:10
Under 0.35 in for the month 0.35 in
Feb Avg: 0.61 in
Diff from Avg: Under 0.53 in for the month 0.53 in
Season:1 0.38 in
YTD
  Avg:11
0.85 in
YTD
  Diff from Avg:11
Under 0.47 in for the year 0.47 in
Last Rain
Time/Date:
16-Feb-2025
at 11:09 AM
9 rain days in 2025
4 days in February
1 day since last rain
Current: SW  3.0 mph
1Hr Average: 1.6 mph
Wind Run: 5.39 miles
Wind Gust
Current: 3.0 mph
Today: 7.0 mph 12:33 AM
Month: 36.0 mph 5-Feb
Year: 37.0 mph 11-Jan
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
10 h 49 m 42 s
of Sunlight Yesterday
10 h 52 m 10 s
of Sunlight Today
Which is
2 min 28 sec longer than
yesterday
10 h 54 m 38 s
of Sunlight Tomorrow
(Noon) graph (Midnight)
Legend

Waning Gibbous
Waning Gibbous, 18 days, 22 hours, 8 minutes in cycle
80%
Illuminated
Humidity Barometer
Current: Decreased 1% since last hour. 86%
Last Hour: Decreased 1% since last hour. 1%
High 12:07 AM: 89%
Low 12:44 AM: 85%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.006  inHg/hr 29.902 inHg
Last Hour: Steady
High 12:09 AM: 29.952
Low 3:35 AM: 29.900
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 6.6
Feb: 564.2
2025 to Date: 1769.1
Cooling Degree Days
2025 to Date: 0.0
Today: 0.00 in
Yesterday: 0.00 in
Feb Snow: Under 5.787 in for the month 5.00 in
Feb Avg: 10.79 in
Diff from Avg: -5.79 in
Season Total:2 31.60 in
Snow Depth: 0.00 in
3 snow days in February
14 snow days this season.2
First Snow of Season:
6-Nov-2024
Average 1st Snow:
27 of Oct
Current: 15.4°F
Low 12:09 AM: 10.9°F
Yesterday: -3.2°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:

77


Moderate
Density:
1.32 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   3.6 @ 11:39 AM
Feb-17

2.4
Feb-18

2.3
Feb-19

2.9
High Yest:   659.0 @ 11:42 AM
Sun Hours Today:
00:00
   This Month: 32:05 Hrs
Rise: 6:49 am  Set: 5:37 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Night
YTD Avg Temp: 27.5°F
Sunrise: 6:49 am
Sunset: 5:37 pm
Moonrise: 9:58 pm
Moonset: 8:57 am
Full Moon: 12-Feb-2025
New Moon: 00:45 UTC
27-Feb-2025
Updated at Midnight
Current ET: 0.00 in
7-Days Rain: 0.08 in
7-Days ET: 0.22 in
7-Day:  0.144 in water in deficit of what evaporated in last 7 days. 0.144 in
February:  0.79 in water in deficit of what evaporated this month. 0.79 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:4.8 | RCP:89%
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 17 of just the month of February for this station since 2006.   11 Historical average rain this season to day 17 of February for this station since 2006.
 NWS Weather Forecast  -   Outlook Overnight & Washington's Birthday
Overnight

Overnight: Patchy Fog
Patchy Fog

Lo 16°F
NWS forecast: Patchy fog. Partly cloudy, with a low around 16. Northeast wind around 3 mph.
Washington's
Birthday
Washington's Birthday: Chance Light Snow
Chance Light Snow

Hi 33°F
NWS forecast: Patchy fog before 8am, then a chance of snow. Partly sunny. High near 33, with temperatures falling to around 29 in the afternoon. North northeast wind 3 to 8 mph. Chance of precipitation is 50%. New snow accumulation of less than half an inch possible.
 NWS Short Term Weather Forecast
Monday
Night
Monday Night: Light Snow Likely
Light Snow Likely
Tuesday

Tuesday: Chance Light Snow
Chance Light Snow
Tuesday
Night
Tuesday Night: Chance Light Snow then Mostly Cloudy
Chance Light Snow then Mostly Cloudy
Wednesday

Wednesday: Partly Sunny
Partly Sunny
Wednesday
Night
Wednesday Night: Mostly Cloudy then Chance Light Snow
Mostly Cloudy then Chance Light Snow
Thursday

Thursday: Chance Light Snow
Chance Light Snow
Thursday
Night
Thursday Night: Chance Light Snow then Partly Cloudy
Chance Light Snow then Partly Cloudy
Lo 11°F Hi 21°F Lo 3°F Hi 21°F Lo 7°F Hi 29°F Lo 17°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