Forecast Details for Saint Peter, IL

Recent Locations: Driggs, ID Bellingham, WA Saint Peter, IL

Overnight: Showers and possibly a thunderstorm, mainly before 5am, then scattered showers and thunderstorms after 5am. Low around 63. Southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

Thursday: Scattered showers and thunderstorms before 7am, then isolated showers between 7am and 8am. Cloudy through mid morning, then gradual clearing, with a high near 80. West wind around 11 mph. Chance of precipitation is 30%.

Thursday Night: Mostly clear, with a low around 58. South wind 3 to 5 mph.

Friday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. South wind 6 to 15 mph, with gusts as high as 22 mph.

Friday Night: Showers and possibly a thunderstorm. Low around 53. South wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 63. Chance of precipitation is 60%.

Saturday Night: A 20 percent chance of showers before 1am. Mostly clear, with a low around 38.

Sunday: Sunny, with a high near 61.

Sunday Night: Mostly clear, with a low around 40.

Monday: Sunny, with a high near 67.

Monday Night: Mostly clear, with a low around 50.

Tuesday: Mostly sunny, with a high near 73.

Tuesday Night: A 20 percent chance of showers. Mostly clear, with a low around 53.

Wednesday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 75.

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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 is Condensation?

Home - Education - Precipitation - 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