Forecast Details for Roundup, MT

Recent Locations: Ophir, OR Yacolt, WA Roundup, MT

This Afternoon: A 20 percent chance of showers after 3pm. Partly sunny, with a high near 73. West southwest wind 21 to 26 mph, with gusts as high as 43 mph.

Tonight: Partly cloudy, with a low around 31. North northwest wind 21 to 26 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 40 mph.

Wednesday: Increasing clouds, with a high near 55. West wind 10 to 17 mph becoming north in the afternoon.

Wednesday Night: Partly cloudy, with a low around 30. North northeast wind 8 to 13 mph becoming light and variable after midnight.

Thursday: Mostly sunny, with a high near 55. Calm wind becoming north northeast 5 to 9 mph in the morning.

Thursday Night: Mostly clear, with a low around 30. East northeast wind 5 to 8 mph becoming calm after midnight.

Friday: Sunny, with a high near 68. Calm wind becoming south southeast 5 to 8 mph in the afternoon.

Friday Night: Partly cloudy, with a low around 41. South southeast wind 5 to 8 mph becoming calm in the evening.

Saturday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 78. Light southwest wind increasing to 6 to 11 mph in the morning.

Saturday Night: A 30 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 45. South southwest wind 6 to 10 mph.

Sunday: Showers likely. Mostly cloudy, with a high near 67. West southwest wind 7 to 14 mph. Chance of precipitation is 60%.

Sunday Night: Showers likely. Mostly cloudy, with a low around 36. North northwest wind 9 to 11 mph. Chance of precipitation is 60%.

Monday: Rain and snow showers likely. Mostly cloudy, with a high near 50. North northwest wind 10 to 15 mph. Chance of precipitation is 60%.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

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

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