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: 13-Mar-2025 @ 3:55am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 1.4°F than last hour.

38.0°F

Wind Chill:  38.0°F
24-hr diff: -7.5°FColder 7.5°F than yesterday at this time.
Cold
High Today
42.4°F
12:00 AM
Low Today
35.4°F
3:05 AM
Yest High
67.8°F
3:18 PM
Yest Low
36.9°F
7:35 AM
Sta* High
78.8°F
2007
Sta* Low
20.6°F
2009
* This Station's Records Since 11/2006
Night time, Dry, A few clouds Night time, Dry, A few clouds

Wind from S Wind:  S
1.2

Gusting to:
1.0 mph
Current Snow Snow3:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
19.8 of 100
Overnight

Overnight: Mostly Clear
Mostly Clear
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Thursday
Night
Thursday Night: Mostly Cloudy then Slight Chance Light Rain
Mostly Cloudy then Slight Chance Light Rain
Lo 34°F Hi 68°F Lo 36°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 0.2°F since last hour. 19.0°F
Last Hour: Decreased 0.2°F since last hour. -0.2°F
High 1:49 AM: 20.1°F
Low 3:05 AM: 18.1°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 31.8°F
Rain Today
rain graph

Melt Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.07 in
Mar Rain: 0.27 in
Mar to Date
  Avg:10
0.32 in
Mar to Date
  Diff from Avg:10
Under 0.05 in for the month 0.05 in
Mar Avg: 1.23 in
Diff from Avg: Under 0.96 in for the month 0.96 in
Season:1 0.67 in
YTD
  Avg:11
1.33 in
YTD
  Diff from Avg:11
Under 0.66 in for the year 0.66 in
Last Rain
Time/Date:
6-Mar-2025
at 7:40 PM
12 rain days in 2025
2 days in March
6 days since last rain
Current: S  1.2 mph
1Hr Average: 1.6 mph
Wind Run: 6.77 miles
Wind Gust
Current: 1.0 mph
Today: 7.0 mph 3:28 AM
Month: 47.0 mph 3-Mar
Year: 47.0 mph 3-Mar
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
11 h 51 m 28 s
of Sunlight Yesterday
11 h 54 m 6 s
of Sunlight Today
Which is
2 min 38 sec longer than
yesterday
11 h 56 m 45 s
of Sunlight Tomorrow
(Noon) graph (Midnight)
Legend

Waxing Gibbous
Waxing Gibbous, 13 days, 9 hours, 14 minutes in cycle
99%
Illuminated
Humidity Barometer
Current: Decreased 3% since last hour. 46%
Last Hour: Decreased 3% since last hour. 3%
High 2:53 AM: 50%
Low 12:00 AM: 39%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.017  inHg/hr 29.463 inHg
Last Hour: Falling slowly
High 1:25 AM: 29.487
Low 3:46 AM: 29.457
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 3.6
Mar: 248.5
2025 to Date: 2381.1
Cooling Degree Days
2025 to Date: 0.0
Today: 0.00 in
Yesterday: 0.00 in
Mar Snow: Under 10.433 in for the month 0.00 in
Mar Avg: 10.43 in
Diff from Avg: -10.43 in
Season Total:2 32.90 in
Snow Depth: 0.00 in
0 snow days in March
15 snow days this season.2
First Snow of Season:
6-Nov-2024
Average 1st Snow:
27 of Oct
Current: 38.0°F
Low 3:17 AM: 32.3°F
Yesterday: 33.7°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:

48


Good
Density:
1.26 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   3.1 @ 1:29 PM
Mar-13

4.6
Mar-14

4.2
Mar-15

4.3
High Yest:   775.0 @ 1:07 PM
Sun Hours Today:
00:00
   This Month: 37:15 Hrs
Rise: 7:13 am  Set: 7:03 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Night
YTD Avg Temp: 31.5°F
Sunrise: 7:13 am
Sunset: 7:03 pm
Moonrise: 5:49 pm
Moonset: 7:04 am
Full Moon: 14-Mar-2025
New Moon: 10:58 UTC
29-Mar-2025
Updated at Midnight
Current ET: 0.02 in
7-Days Rain: 0.07 in
7-Days ET: 0.80 in
7-Day:  0.733 in water in deficit of what evaporated in last 7 days. 0.733 in
March:  1.04 in water in deficit of what evaporated this month. 1.04 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:45%
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 13 of just the month of March for this station since 2006.   11 Historical average rain this season to day 13 of March for this station since 2006.
 NWS Weather Forecast  -   Outlook Overnight & Thursday
Overnight

Overnight: Mostly Clear
Mostly Clear

Lo 34°F
NWS forecast: Mostly clear. Low around 34, with temperatures rising to around 37 overnight. South southwest wind around 6 mph.
Thursday

Thursday: Mostly Sunny
Mostly Sunny

Hi 68°F
NWS forecast: Mostly sunny, with a high near 68. South southeast wind 3 to 9 mph.
 NWS Short Term Weather Forecast
Thursday
Night
Thursday Night: Mostly Cloudy then Slight Chance Light Rain
Mostly Cloudy then Slight Chance Light Rain
Friday

Friday: Rain And Snow Likely
Rain And Snow Likely
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday

Sunday: Sunny
Sunny
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Lo 36°F Hi 54°F Lo 27°F Hi 49°F Lo 28°F Hi 61°F Lo 37°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