Forecast Details for Sisters, OR

Recent Locations: Laporte, MN La Moille, IL Sisters, OR

Overnight: A 50 percent chance of rain. Cloudy, with a steady temperature around 31. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

Washington's Birthday: Rain likely before 10am, then rain and snow between 10am and 1pm, then snow likely after 1pm. Snow level 4500 feet lowering to 3200 feet in the afternoon . High near 40. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Monday Night: Snow likely, mainly after 4am. Mostly cloudy, with a low around 19. Light and variable wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Tuesday: Snow. High near 35. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Tuesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 15. Calm wind. New snow accumulation of less than a half inch possible.

Wednesday: Snow likely, mainly after 10am. Partly sunny, with a high near 33. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Wednesday Night: Snow likely. Mostly cloudy, with a low around 17. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Thursday: Snow likely. Mostly cloudy, with a high near 31. Chance of precipitation is 70%.

Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 16.

Friday: Snow likely. Mostly sunny, with a high near 36.

Friday Night: A chance of snow. Mostly cloudy, with a low around 20.

Saturday: Rain and snow likely. Mostly cloudy, with a high near 41.

Saturday Night: Rain and snow likely. Mostly cloudy, with a low around 27.

Sunday: Rain and snow likely. Snow level rising to 4000 feet in the afternoon. Mostly cloudy, with a high near 46.

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