Forecast Details for Glendora, CA

Recent Locations: Glendora, CA  
Tonight: Patchy fog after 11pm. Otherwise, mostly clear early, then becoming mostly cloudy, with a low around 52. Southwest wind around 5 mph becoming northwest in the evening.
Friday: Mostly sunny, with a high near 74. Northwest wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 15 mph.
Friday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 55. West southwest wind 5 to 10 mph.
Saturday: Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 77. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night: Mostly clear, with a low around 58. Southwest wind 5 to 10 mph becoming north after midnight.
Sunday: Sunny, with a high near 83.
Sunday Night: Mostly clear, with a low around 58.
Monday: Mostly sunny, with a high near 77.
Monday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54.
Tuesday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 69.
Tuesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 52.
Wednesday: Patchy fog. Otherwise, partly sunny, with a high near 68.
Wednesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 51.
Thursday: Patchy fog. Otherwise, mostly cloudy, with a high near 66.

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Current U.S. National Radar--Current

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Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

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North American Water Vapor Map

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Condensation Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds