Navigation

External Links

ThorntonWeather.com on Twitter

ThorntonWeather.com on Facebook

Alerts


No alerts
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: 04-May-2024 @ 9:20am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 1.3°F than last hour.

44.3°F

24-hr diff: -15.4°FColder 15.4°F than yesterday at this time.
Cold
High Today
44.4°F
9:14 AM 		Low Today
38.6°F
5:26 AM
Yest High
77.6°F
2:07 PM 		Yest Low
38.9°F
11:52 PM
Sta* High
87.9°F
2012 		Sta* Low
31.0°F
2017
* This Station's Records Since 11/2006
Cloudy, Dry Cloudy, Dry

Wind from SE Wind:  SE
3.2
Gusting to:
 1.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
19.4 of 100
Today

Today: Mostly Sunny
Mostly Sunny
Tonight

Tonight: Partly Cloudy
Partly Cloudy
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Hi 66°F ↓ Lo 44°F ↑ Hi 79°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 1.7°F since last hour. 25.3°F
Last Hour: Decreased 1.7°F since last hour. -1.7°F
High 12:17 AM: 31.2°F
Low 8:41 AM: 25.1°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 37.6°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 1.02 in
May Rain: 0.00 in
May to Date
  Avg:10 		0.34 in
May to Date
  Diff from Avg:10 		Under 0.34 in for the month 0.34 in
May Avg: 3.07 in
Diff from Avg: Under 3.07 in for the month 3.07 in
Season:1 6.80 in
YTD
  Avg:11 		4.17 in
YTD
  Diff from Avg:11 		Over 2.63 in for the year 2.63 in
Last Rain
Time/Date: 		28-Apr-2024
at 12:30 PM
29 rain days in 2024
0 days in May
5 days since last rain
Current: SE  3.2 mph
1Hr Average: 2.7 mph
Wind Run: 10.94 miles
Wind Gust
Current: 1.0 mph
Today: 9.2 mph 12:36 AM
Month: 34.0 mph 1-May
Year: 46.0 mph 10-Jan
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
14 h 3 m 15 s
of Sunlight Yesterday
14 h 5 m 26 s
of Sunlight Today Which is
2 min 11 sec longer than
yesterday
14 h 7 m 35 s
of Sunlight Tomorrow
 (Noon) graph (Midnight)
 Legend

Waning Crescent
Waning Crescent, 25 days, 21 hours, 1 minutes in cycle
16%
Illuminated
Humidity Barometer
Current: Decreased 6% since last hour. 47%
Last Hour: Decreased 6% since last hour. 6%
High 12:00 AM: 72%
Low 9:06 AM: 47%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Falling 0.009 inHg/hr 30.200 inHg
Last Hour: Steady
High 8:26 AM: 30.215
Low 3:55 AM: 30.153
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Heating Degree Days Snow3 Wind Chill Air
Today: 9.4
May: 44.0
2024 to Date: 3015.4
Cooling Degree Days
2024 to Date: 0.0
Today: 0.00 in
Yesterday: 0.00 in
May Snow: Under 1.654 in for the month 0.00 in
May Avg: 1.65 in
Diff from Avg: -1.65 in
Season Total:2 50.40 in
Snow Depth: 0.00 in
0 snow days in May
23 snow days this season.2
First Snow of Season:
29-Oct-2023
Average 1st Snow:
25 of Oct
Current: 43.1°F
Low 12:37 AM: 35.3°F
Yesterday: 34.4°F
Record: -31.0°F
22-Dec-2022
Quality
Index6:
42

Good
Density:
1.27 kg/m3
Current UV Index Current Solar Energy9
1.0
Sunburn in
112 Minutes 		Highest:
9:19 AM
1.0
183 W/m2
27%
W/m2 ⇒ SI 		High Today:
9:19 AM
 183  W/m2
Record:
1461 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Morning
YTD Avg Temp: 40.7°F
Sunrise: 5:55 am
Sunset: 7:56 pm
Moonrise: 4:02 am
Moonset: 4:02 pm
Full Moon: 23-Apr-2024
New Moon: 03:23 UTC
07-May-2024
Updated at Midnight
Current ET: 0.03 in
7-Days Rain: 1.02 in
7-Days ET: 1.14 in
7-Day: 0.118 in water in deficit of what evaporated in last 7 days. 0.118 in
May: 0.6 in water in deficit of what evaporated this month. 0.6 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
  100.4°F°F
23-Jun-2012 		  -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:98%
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 4 of just the month of May for this station since 2006.   11 Historical average rain this season to day 4 of May for this station since 2006.
 NWS Weather Forecast  -   Outlook Today & Tonight
Today

Today: Mostly Sunny
Mostly Sunny

Hi 66°F ↓ 		NWS forecast: Mostly sunny. High near 66, with temperatures falling to around 64 in the afternoon. Southeast wind 7 to 12 mph, with gusts as high as 18 mph.
 Tonight

Tonight: Partly Cloudy
Partly Cloudy

Lo 44°F ↑ 		NWS forecast: Partly cloudy. Low around 44, with temperatures rising to around 46 overnight. South wind 8 to 15 mph, with gusts as high as 24 mph. New rainfall amounts less than a tenth of an inch possible.
 NWS Short Term Weather Forecast
Sunday

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

Monday: Chance Rain Showers then Slight Chance Showers And Thunderstorms
Chance Rain Showers then Slight Chance Showers And T-Storms
Monday
Night
Monday Night: Partly Cloudy
Partly Cloudy
Tuesday

Tuesday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy
Wednesday

Wednesday: Sunny then Slight Chance Showers And Thunderstorms
Sunny then Slight Chance Showers And T-Storms
Hi 79°F Lo 48°F Hi 62°F Lo 43°F Hi 65°F Lo 38°F Hi 61°F
ajax-dashboard6.php - Version 6.95h - 20-Feb-2023 - Script by: Scott of BurnsvilleWeatherLIVE.com
Now supported by Saratoga-weather.org Download