Forecast Details for Fortine, MT

Recent Locations: Jonancy, KY Concord, IL Fortine, MT

Today: A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Patchy smoke before 4pm. Mostly sunny, with a high near 82. Calm wind. Chance of precipitation is 20%.

Tonight: Partly cloudy, with a low around 47. Calm wind.

Tuesday: A 40 percent chance of rain after noon. Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 85. Calm wind.

Tuesday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm. Mostly cloudy, with a low around 49. Calm wind. Chance of precipitation is 50%.

Wednesday: A chance of rain before 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 79. Calm wind. Chance of precipitation is 50%.

Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 49. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 76. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night: A chance of showers and thunderstorms before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 47.

Friday: A chance of rain, then showers likely and possibly a thunderstorm after noon. Patchy fog between 9am and 10am. Otherwise, partly sunny, with a high near 77.

Friday Night: A chance of rain. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 47.

Saturday: A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 76.

Saturday Night: A chance of rain. Mostly cloudy, with a low around 47.

Sunday: A chance of rain. Partly sunny, with a high near 75.

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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