• Today

    Mar 31

    74°Lo 43°

    Mostly sunny and mild

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      7 - Low
  • Wed

    Apr 1

    68°Lo 33°

    An afternoon thunderstorm

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Thu

    Apr 2

    39°Lo 21°

    Rain, then snow; much colder

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Fri

    Apr 3

    41°Lo 22°

    Mostly cloudy and chilly

    Low ragweed pollen levels
    • Precip
      6%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      94%
    more
  • Sat

    Apr 4

    55°Lo 30°

    Sunny and warmer

    Ragweed Pollen Weather
    • Precip
      3%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      10%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
1am
2am 3am 4am 5am 6am 7am 8am
  1am 2am 3am 4am 5am 6am 7am 8am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Sunny
Temp (°F) 44° 42° 42° 41° 39° 37° 40° 46°
RealFeel® 41° 39° 39° 38° 35° 34° 36° 46°
Humidity 41% 45% 44% 46% 50% 53% 49% 35%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Rain
 
5%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Wind (mph) 6 WNW 6 W 6 W 6 W 6 W 6 W 7 WSW 6 NNE
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 27% 25% 25% 25% 19% 18% 14% 0%
Dew Point 22° 22° 22° 22° 21° 22° 22° 20°
Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F Middle Grid line 35 F

Temperature History - Mar 31

more Historical Weather Data >
  Today Normal Record 3/31/2014
High 74° 58° 81° (2012) 56°
Low 43° 30° (1954) 33°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:46 AM with 12:36 of sunlight, then sets at 7:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:10 PM with 13:06 of moolight, then sets at 5:16 AM

Castle Rock Weather Report

Snow to Cover Denver Prior to Easter Weekend

March 31, 2015; 1:06 PM ET

Accumulating snow will hit the Denver area on Thursday with slippery roads and travel problems. more >

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps