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: 30-Mar-2026 @ 12:50pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 2.4°F than last hour.

79.3°F

24-hr diff: 0.4°FWarmer 0.4°F than yesterday at this time.
Warm
High Today
80.6°F
12:41 PM
Low Today
49.2°F
7:02 AM
Yest High
82.3°F
3:18 PM
Yest Low
49.5°F
6:55 AM
Sta* High
81.5°F
2010
Sta* Low
19.4°F
2007
* This Station's Records Since 11/2006
Sunny, Dry Sunny, Dry

Wind from ENE Wind:  ENE
4.0

Gusting to:
5.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: EXTREME Current CBI
Fire Danger:
136.2 of 100
Today

Today: Partly Sunny
Partly Sunny
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Tuesday

Tuesday: Mostly Cloudy then Chance Rain Showers
Mostly Cloudy then Chance Rain Showers
Hi 83°F Lo 45°F Hi 59°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 1.7°F since last hour. 24.2°F
Last Hour: Decreased 1.7°F since last hour. -1.7°F
High 12:36 PM: 33.9°F
Low 12:25 PM: 21.3°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 55.5°F
Rain Today
rain graph

Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.00 in
Mar Rain: 0.65 in
Mar to Date
  Avg:10
1.30 in
Mar to Date
  Diff from Avg:10
Under 0.65 in for the month 0.65 in
Mar Avg: 1.25 in
Diff from Avg: Under 0.6 in for the month 0.60 in
Season:1 0.91 in
YTD
  Avg:11
2.27 in
YTD
  Diff from Avg:11
Under 1.36 in for the year 1.36 in
Last Rain
Time/Date:
16-Mar-2026
at 10:49 AM
10 rain days in 2026
5 days in March
13 days since last rain
Current: ENE  4.0 mph
1Hr Average: 4.6 mph
Wind Run: 42.88 miles
Wind Gust
Current: 5.0 mph
Today: 14.0 mph 12:44 PM
Month: 43.0 mph 12-Mar
Year: 43.0 mph 25-Feb
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
12 h 33 m 6 s
of Sunlight Yesterday
12 h 35 m 43 s
of Sunlight Today
Which is
2 min 37 sec longer than
yesterday
12 h 38 m 20 s
of Sunlight Tomorrow
(Noon) graph (Midnight)
Legend

Waxing Gibbous
Waxing Gibbous, 11 days, 17 hours, 31 minutes in cycle
94%
Illuminated
Humidity Barometer
Current: Decreased 2% since last hour. 13%
Last Hour: Decreased 2% since last hour. 2%
High 7:05 AM: 44%
Low 12:23 PM: 12%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.034  inHg/hr 29.432 inHg
Last Hour: Falling
High 12:05 AM: 29.518
Low 12:48 PM: 29.432
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Cooling Degree Days Snow3 Heat Index Air
Today: 0.0
Mar: 21.9
2026 to Date: 22.4
Heating Degree Days
2026 to Date: 1801.1
Today: 0.00 in
Yesterday: 0.00 in
Mar Snow: Under 3.476 in for the month 6.80 in
Mar Avg: 10.28 in
Diff from Avg: -3.48 in
Season Total:2 18.60 in
Snow Depth: 0.00 in
2 snow days in March
10 snow days this season.2
First Snow of Season:
28-Nov-2025
Average 1st Snow:
29 of Oct
Current: 78.3°F
High 12:38pm: 80.0°F
Yesterday: 80.0°F
Record: 102.9°F
8-Jul-2021
Quality
Index6:

70


Moderate
Density:
1.16 kg/m3
Current UV Index Current Solar Energy9
4.1
Sunburn in
27 Minutes
Highest:
12:43 PM
4.3
817 W/m2
91%
W/m2 SI
High Today:
11:33 AM
912  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 44.4°F
Sunrise: 6:46 am
Sunset: 7:21 pm
Moonrise: 5:18 pm
Moonset: 5:37 am
Full Moon: 01-Apr-2026
New Moon: 11:52 UTC
17-Apr-2026
Updated at Midnight
Current ET: 0.17 in
7-Days Rain: 0.00 in
7-Days ET: 1.08 in
7-Day:  1.083 in water in deficit of what evaporated in last 7 days. 1.083 in
March:  3.56 in water in deficit of what evaporated this month. 3.56 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:5 | S3C2:1 | Ajax 3.xx
ISS:Ok | CON:4.7 | RCP:78%
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 30 of just the month of March for this station since 2006.   11 Historical average rain this season to day 30 of March for this station since 2006.
 NWS Weather Forecast  -   Outlook Today & Tonight
Today

Today: Partly Sunny
Partly Sunny

Hi 83°F
NWS forecast: Partly sunny. High near 83, with temperatures falling to around 81 in the afternoon. West southwest wind 5 to 14 mph, with gusts as high as 24 mph.
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy

Lo 45°F
NWS forecast: Mostly cloudy. Low around 45, with temperatures rising to around 51 overnight. West northwest wind 6 to 14 mph, with gusts as high as 23 mph.
 NWS Short Term Weather Forecast
Tuesday

Tuesday: Mostly Cloudy then Chance Rain Showers
Mostly Cloudy then Chance Rain Showers
Tuesday
Night
Tuesday Night: Rain Showers Likely
Rain Showers Likely
Wednesday

Wednesday: Rain And Snow Showers Likely
Rain And Snow Showers Likely
Wednesday
Night
Wednesday Night: Rain Showers Likely
Rain Showers Likely
Thursday

Thursday: Mostly Sunny then Slight Chance Rain Showers
Mostly Sunny then Slight Chance Rain Showers
Thursday
Night
Thursday Night: Chance Rain Showers
Chance Rain Showers
Friday

Friday: Chance Rain And Snow Showers
Chance Rain And Snow Showers
Hi 59°F Lo 41°F Hi 62°F Lo 37°F Hi 72°F Lo 41°F Hi 58°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