Forecast Details for Harlowton, MT

Recent Locations: Harbor City, CA Buellton, CA Harlowton, MT

Today: A slight chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 73. Light and variable wind becoming southeast 5 to 8 mph in the afternoon. Chance of precipitation is 70%.

Tonight: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 53. Southeast wind 6 to 8 mph becoming west northwest in the evening. Chance of precipitation is 70%.

Friday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 73. West wind around 10 mph becoming north in the afternoon. Chance of precipitation is 70%.

Friday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 49. North wind 6 to 10 mph becoming west northwest after midnight. Chance of precipitation is 40%.

Saturday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 78. West northwest wind 5 to 7 mph. Chance of precipitation is 30%.

Saturday Night: Mostly clear, with a low around 48. North northeast wind 5 to 9 mph becoming south southwest after midnight.

Sunday: Sunny, with a high near 85. West southwest wind 6 to 8 mph.

Sunday Night: Mostly clear, with a low around 50. North wind 6 to 10 mph becoming west northwest after midnight.

Labor Day: Sunny, with a high near 86. West wind 5 to 7 mph becoming east southeast in the afternoon.

Monday Night: Partly cloudy, with a low around 51. East wind 6 to 10 mph becoming west northwest after midnight.

Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81. West northwest wind 10 to 13 mph becoming north in the afternoon.

Tuesday Night: A 20 percent chance of showers. Partly cloudy, with a low around 47. North wind 6 to 14 mph becoming west after midnight.

Wednesday: Mostly sunny, with a high near 76. Southwest wind 6 to 9 mph becoming northeast in the afternoon.

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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 Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds

Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow