• Early AM

    Dec 18

    Lo 45°

    A shower possible

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Today

    Dec 18

    57°Lo 49°

    Mostly cloudy

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Fri

    Dec 19

    58°Lo 44°

    Morning rain, then a shower

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Sat

    Dec 20

    58°Lo 47°

    Periods of sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Sun

    Dec 21

    62°Lo 46°

    Fog in the morning; some sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Fog
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 52° 55° 58° 59° 61° 62° 62° 61°
RealFeel® 52° 56° 59° 61° 62° 62° 62° 59°
Humidity 88% 85% 83% 81% 79% 77% 75% 76%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
1%
 
1%
 
1%
 
1%
 
1%
 
1%
 
1%
 
1%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 4 NNW 4 NNW 4 NW 5 NW 5 WNW 5 WNW 5 WNW 5 WNW
UV Index 0 1 1 2 2 1 0 0
Cloud Cover 71% 70% 69% 68% 70% 72% 72% 70%
Dew Point 49° 51° 53° 54° 54° 55° 54° 54°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Dec 21

more Historical Weather Data >
  Today Normal Record 12/21/2013
High 62° N/A N/A 67°
Low 46° N/A N/A 42°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:24 AM with 9:30 of sunlight, then sets at 4:54 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:46 AM with 10:19 of moolight, then sets at 5:05 PM

Rohnert Park Weather Report

San Francisco: Dry Weather Ahead for the Weekend

December 17, 2014; 8:49 PM ET

Conditions will turn dry for San Francisco this weekend and last into next week. more >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

Sun. Snow Day Potential