Yesterday's Weather for San Francisco, CA

Your Recent Locations:  San Francisco, CA  

How much rain or snow did San Francisco, CA get yesterday? The answer is below!

Yesterday's High was 63 °F

Yesterday's Low was 55 °F

Yesterday's Precipitation was 0.00 inches

Observations on November 20, 2017:
Time Temp Wind Conditions
12:56 AM PST 57.0 °F 0.0 mph Overcast
1:56 AM PST 57.9 °F 3.5 mph Overcast
2:56 AM PST 57.9 °F 4.6 mph Overcast
3:56 AM PST 55.9 °F 0.0 mph Mostly Cloudy
4:56 AM PST 57.0 °F 0.0 mph Overcast
5:56 AM PST 57.0 °F 0.0 mph Overcast
6:56 AM PST 57.0 °F 3.5 mph Overcast
7:56 AM PST 57.9 °F 0.0 mph Overcast
8:56 AM PST 59.0 °F 3.5 mph Overcast
10:56 AM PST 60.1 °F 4.6 mph Overcast
10:59 AM PST 60.1 °F 3.5 mph Overcast
11:56 AM PST 60.1 °F 4.6 mph Overcast
12:56 PM PST 60.1 °F 4.6 mph Overcast
1:56 PM PST 61.0 °F 4.6 mph Overcast
2:56 PM PST 63.0 °F 4.6 mph Mostly Cloudy
3:56 PM PST 62.1 °F 5.8 mph Mostly Cloudy
4:56 PM PST 62.1 °F 3.5 mph Mostly Cloudy
5:56 PM PST 62.1 °F 0.0 mph Mostly Cloudy
6:56 PM PST 61.0 °F 3.5 mph Overcast
7:56 PM PST 61.0 °F 3.5 mph Mostly Cloudy
8:56 PM PST 61.0 °F 3.5 mph Mostly Cloudy
9:56 PM PST 61.0 °F 4.6 mph Mostly Cloudy
10:56 PM PST 59.0 °F 5.8 mph Mostly Cloudy
11:56 PM PST 59.0 °F 4.6 mph Haze
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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Todays National Weather Map

National Weather Forecast for Tomorrow

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Tomorrows National Weather Map

North America Water Vapor (Moisture)

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North American Water Vapor Map

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Weather Topic: What are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

wall clouds Next Topic: Condensation

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Condensation

Weather Topic: What is Drizzle?

Home - Education - Precipitation - Drizzle

drizzle Next Topic: Evaporation

Drizzle is precipitation in the form of water droplets which are smaller than raindrops.

Drizzle is characterized by fine, gently falling droplets and typically does not impact human habitation in a negative way. The exception to this is freezing drizzle, a condition where drizzle freezes immediately upon reaching earth's surface. Freezing drizzle is still less dangerous than freezing rain, but can potentially result in hazardous road conditions.

Next Topic: Evaporation