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-Oct-2026 @ 3:50pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 0.4°F than last hour.

65.7°F

24-hr diff: -14°FColder 14°F than yesterday at this time.
Comfortable
High Today
67.1°F
3:25 PM
Low Today
50.0°F
7:56 AM
Yest High
83.4°F
4:08 PM
Yest Low
52.2°F
7:15 AM
Sta* High
81.4°F
2015
Sta* Low
27.4°F
2018
* This Station's Records Since 11/2006
Partly cloudy, Dry Partly cloudy, Dry

Wind from SSE Wind:  SSE
2.8

Gusting to:
5.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
17.4 of 100
This
Afternoon
This Afternoon: Slight Chance Rain Showers
Slight Chance Rain Showers
Tonight

Tonight: Rain Showers
Rain Showers
Wednesday

Wednesday: Rain Showers
Rain Showers
Hi 62°F Lo 42°F Hi 47°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 1.5°F since last hour. 47.1°F
Last Hour: Decreased 1.5°F since last hour. -1.5°F
High 12:56 PM: 50.5°F
Low 2:25 AM: 44.7°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 56.0°F
Rain Today
rain graph

Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.00 in
Oct Rain: 0.00 in
Oct to Date
  Avg:10
0.48 in
Oct to Date
  Diff from Avg:10
Under 0.48 in for the month 0.48 in
Oct Avg: 0.89 in
Diff from Avg: Under 0.89 in for the month 0.89 in
Season:1 6.68 in
YTD
  Avg:11
12.79 in
YTD
  Diff from Avg:11
Under 6.11 in for the year 6.11 in
Last Rain
Time/Date:
25-Sep-2026
at 11:23 PM
57 rain days in 2026
0 days in October
15 days since last rain
Current: SSE  2.8 mph
1Hr Average: 3.6 mph
Wind Run: 59.44 miles
Wind Gust
Current: 5.0 mph
Today: 16.1 mph 2:11 PM
Month: 26.0 mph 10-Oct
Year: 43.0 mph 25-Feb
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
11 h 17 m 36 s
of Sunlight Yesterday
11 h 15 m 3 s
of Sunlight Today
Which is
2 min 33 sec shorter than
yesterday
11 h 12 m 31 s
of Sunlight Tomorrow
(Noon) graph (Midnight)
Legend

Waxing Crescent
Waxing Crescent, 3 days, 6 hours, 4 minutes in cycle
10%
Illuminated
Humidity Barometer
Current: Decreased 2% since last hour. 51%
Last Hour: Decreased 2% since last hour. 2%
High 7:16 AM: 87%
Low 3:37 PM: 48%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Rising 0.023  inHg/hr 29.569 inHg
Last Hour: Rising slowly
High 11:48 AM: 29.616
Low 12:35 AM: 29.437
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
Oct: 40.3
2026 to Date: 1160.7
Heating Degree Days
2026 to Date: 2456.4
Today: 0.00 in
Yesterday: 0.00 in
Oct Snow: Under 3.78 in for the month 0.00 in
Oct Avg: 3.78 in
Diff from Avg: -3.78 in
Season Total:2 0.00 in
Snow Depth: 0.00 in
0 snow days in October
0 snow days this season.2
First Snow of Season:
8-Jan-2026
Average 1st Snow:
29 of Oct
Current: 65.4°F
High 3:25pm: 67.1°F
Yesterday: 80.7°F
Record: 103.5°F
26-Jul-2026
Quality
Index6:

42


Good
Density:
1.19 kg/m3
Current UV Index Current Solar Energy9
1.3
Sunburn in
86 Minutes
Highest:
12:16 PM
3.6
499 W/m2
100%
W/m2 ⇒ SI
High Today:
12:15 PM
960  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 60.2°F
Sunrise: 7:08 am
Sunset: 6:24 pm
Moonrise: 10:25 am
Moonset: 7:03 pm
Full Moon: 25-Oct-2026
New Moon: 07:03 UTC
09-Nov-2026
Updated at Midnight
Current ET: 0.10 in
7-Days Rain: 0.00 in
7-Days ET: 1.00 in
7-Day:  1.004 in water in deficit of what evaporated in last 7 days. 1.004 in
October:  1.43 in water in deficit of what evaporated this month. 1.43 in
Support this Site!
Your donation helps support this site
HIGHS: LOWS:
104.4°F
25-Jul-2026
-14.6°F
2-Feb-2011
Daytime Records
  100.8°F°F
02-Aug-2026
  -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:67%
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 13 of just the month of October for this station since 2006.   11 Historical average rain this season to day 13 of October for this station since 2006.
 NWS Weather Forecast  -   Outlook This Afternoon & Tonight
This
Afternoon
This Afternoon: Slight Chance Rain Showers
Slight Chance Rain Showers

Hi 62°F
NWS forecast: A slight chance of rain showers after 3pm. Mostly cloudy. High near 62, with temperatures falling to around 60 in the afternoon. Northeast wind around 8 mph. Chance of precipitation is 20%.
Tonight

Tonight: Rain Showers
Rain Showers

Lo 42°F
NWS forecast: Rain showers. Cloudy. Low around 42, with temperatures rising to around 46 overnight. Northeast wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
 NWS Short Term Weather Forecast
Wednesday

Wednesday: Rain Showers
Rain Showers
Wednesday
Night
Wednesday Night: Light Rain
Light Rain
Thursday

Thursday: Light Rain Likely
Light Rain Likely
Thursday
Night
Thursday Night: Slight Chance Rain Showers then Partly Cloudy
Slight Chance Rain Showers then Partly Cloudy
Friday

Friday: Sunny
Sunny
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Saturday

Saturday: Sunny
Sunny
Hi 47°F Lo 38°F Hi 51°F Lo 33°F Hi 61°F Lo 35°F Hi 72°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