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: 02-May-2026 @ 3:40am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 3°F than last hour.

38.5°F

Wind Chill:  38.5°F
24-hr diff: 1°FWarmer 1°F than yesterday at this time.
Cold
High Today
47.0°F
12:00 AM
Low Today
38.1°F
3:33 AM
Yest High
64.1°F
4:36 PM
Yest Low
31.1°F
6:05 AM
Sta* High
82.2°F
2012
Sta* Low
20.7°F
2013
* This Station's Records Since 11/2006
Night time, Dry, Clear skies Night time, Dry, Clear skies

Calm Wind:  NNE
0.0

Gusting to:
0.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
11.4 of 100
Overnight

Overnight: Mostly Clear
Mostly Clear
Saturday

Saturday: Sunny
Sunny
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Lo 37°F Hi 72°F Lo 44°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 0.2°F since last hour. 23.3°F
Last Hour: Increased 0.2°F since last hour. +0.2°F
High 3:38 AM: 23.8°F
Low 1:25 AM: 22.0°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 33.5°F
Rain Today
rain graph

Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.05 in
May Rain: 0.00 in
May to Date
  Avg:10
0.13 in
May to Date
  Diff from Avg:10
Under 0.13 in for the month 0.13 in
May Avg: 2.98 in
Diff from Avg: Under 2.98 in for the month 2.98 in
Season:1 1.35 in
YTD
  Avg:11
3.79 in
YTD
  Diff from Avg:11
Under 2.44 in for the year 2.44 in
Last Rain
Time/Date:
28-Apr-2026
at 11:10 PM
16 rain days in 2026
0 days in May
3 days since last rain
Current: NNE  0.0 mph
1Hr Average: 0.7 mph
Wind Run: 1.59 miles
Wind Gust
Current: 0.0 mph
Today: 5.0 mph 3:34 AM
Month: 17.0 mph 1-May
Year: 43.0 mph 25-Feb
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
13 h 54 m 58 s
of Sunlight Yesterday
13 h 57 m 11 s
of Sunlight Today
Which is
2 min 13 sec longer than
yesterday
13 h 59 m 23 s
of Sunlight Tomorrow
(Noon) graph (Midnight)
Legend

Waning Gibbous
Waning Gibbous, 14 days, 21 hours, 52 minutes in cycle
100%
Illuminated
Humidity Barometer
Current: Increased 6% since last hour. 54%
Last Hour: Increased 6% since last hour. 6%
High 3:32 AM: 55%
Low 12:00 AM: 38%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Rising 0.01  inHg/hr 29.906 inHg
Last Hour: Steady
High 12:01 AM: 29.927
Low 2:31 AM: 29.895
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 3.0
May: 18.6
2026 to Date: 2202.2
Cooling Degree Days
2026 to Date: 32.1
Today: 0.00 in
Yesterday: 0.00 in
May Snow: Under 1.496 in for the month 0.00 in
May Avg: 1.50 in
Diff from Avg: -1.50 in
Season Total:2 22.40 in
Snow Depth: 0.00 in
0 snow days in May
11 snow days this season.2
First Snow of Season:
28-Nov-2025
Average 1st Snow:
29 of Oct
Current: 38.5°F
Low 3:36 AM: 35.7°F
Yesterday: 31.1°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:

N/A


No Data
Density:
1.27 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   7.0 @ 12:46 PM
May-02

7.8
May-03

7.1
May-04

7.2
High Yest:   956.0 @ 12:45 PM
Sun Hours Today:
00:00
   This Month: 08:27 Hrs
Rise: 5:58 am  Set: 7:54 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Night
YTD Avg Temp: 46.6°F
Sunrise: 5:58 am
Sunset: 7:54 pm
Moonrise: 8:27 pm
Moonset: 6:04 am
Full Moon: 01-May-2026
New Moon: 20:02 UTC
16-May-2026
Updated at Midnight
Current ET: 0.03 in
7-Days Rain: 0.05 in
7-Days ET: 0.67 in
7-Day:  0.623 in water in deficit of what evaporated in last 7 days. 0.623 in
May:  0.18 in water in deficit of what evaporated this month. 0.18 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:4.7 | 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.   10 Historical average only to day 2 of just the month of May for this station since 2006.   11 Historical average rain this season to day 2 of May for this station since 2006.
 NWS Weather Forecast  -   Outlook Overnight & Saturday
Overnight

Overnight: Mostly Clear
Mostly Clear

Lo 37°F
NWS forecast: Mostly clear. Low around 37, with temperatures rising to around 40 overnight. West wind around 6 mph.
Saturday

Saturday: Sunny
Sunny

Hi 72°F
NWS forecast: Sunny, with a high near 72. South wind around 6 mph.
 NWS Short Term Weather Forecast
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Sunday
Night
Sunday Night: Mostly Cloudy
Mostly Cloudy
Monday

Monday: Partly Sunny then Chance Rain Showers
Partly Sunny then Chance Rain Showers
Monday
Night
Monday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Tuesday

Tuesday: Rain Showers Likely
Rain Showers Likely
Tuesday
Night
Tuesday Night: Rain And Snow Showers
Rain And Snow Showers
Lo 44°F Hi 76°F Lo 46°F Hi 69°F Lo 41°F Hi 48°F Lo 34°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