Forecast Details for Fresno, CA

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Current Alerts for Fresno, CA: Dense Fog Advisory

Tonight: Increasing clouds, with a low around 48. Northwest wind around 5 mph.

Monday: Cloudy, with a high near 58. Calm wind becoming northwest around 5 mph.

Monday Night: A 10 percent chance of rain after 4am. Cloudy, with a low around 51. Calm wind.

Tuesday: A 40 percent chance of rain, mainly after 10am. Cloudy, with a high near 62. South southeast wind around 5 mph.

Tuesday Night: Rain before 4am, then a chance of showers and thunderstorms after 4am. Low around 50. Southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday: A chance of rain and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of rain and thunderstorms after 4pm. Partly sunny, with a high near 59. South wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 43. Northeast wind around 5 mph becoming north northwest in the evening.

Thursday: Mostly sunny, with a high near 60. Calm wind becoming northwest around 5 mph in the afternoon.

Thursday Night: Mostly clear, with a low around 42. Northwest wind around 5 mph becoming calm in the evening.

Friday: Partly sunny, with a high near 59. Calm wind becoming southwest around 5 mph.

Friday Night: Partly cloudy, with a low around 43. Calm wind.

Saturday: A 20 percent chance of rain. Cloudy, with a high near 60. Calm wind becoming south southeast around 5 mph in the afternoon.

Saturday Night: A 40 percent chance of rain. Cloudy, with a low around 45. East southeast wind around 5 mph.

Sunday: Rain likely. Cloudy, with a high near 54. South wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle