Forecast Details for Onalaska, WI

Recent Locations: Water Valley, MS Deerfield, WI Onalaska, WI

Current Alerts for Onalaska, WI: Flood Warning

This Afternoon: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a steady temperature around 65. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: A 50 percent chance of showers and thunderstorms, mainly before 3am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 52. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: Patchy fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 72. Light and variable wind.

Thursday Night: Mostly clear, with a low around 54. Southeast wind 5 to 7 mph.

Friday: Showers and possibly a thunderstorm after 1pm. High near 77. South wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: Showers and possibly a thunderstorm. Low around 38. Southwest wind 9 to 13 mph becoming northwest in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Saturday: A slight chance of rain showers before 1pm, then a slight chance of rain and snow showers. Mostly sunny, with a high near 44. Breezy, with a northwest wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

Saturday Night: Partly cloudy, with a low around 30. West wind 6 to 11 mph, with gusts as high as 24 mph.

Sunday: Sunny, with a high near 49. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.

Sunday Night: Mostly clear, with a low around 31. Northwest wind around 6 mph becoming calm in the evening.

Monday: Sunny, with a high near 61. Light southeast wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

Monday Night: Partly cloudy, with a low around 46. South wind around 8 mph, with gusts as high as 20 mph.

Tuesday: Sunny, with a high near 69. West wind 7 to 9 mph, with gusts as high as 18 mph.

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Weather Topic: What are Hole Punch Clouds?

Home - Education - Cloud Types - Hole Punch Clouds

Hole Punch Clouds Next Topic: Mammatus Clouds

A hole punch cloud is an unusual occurrence when a disk-shaped hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.

When part of the cloud forms ice crystals, water droplets in the surrounding area of the cloud evaporate. The effect of this process produces a large elliptical gap in the cloud. The hole punch cloud formation is rare, but it is not specific to any geographic area.

Other names which have been used to describe this phenomena include fallstreak hole, skypunch, and cloud hole.

Next Topic: Mammatus Clouds

Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation