Lake Simtustus, OR Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Clear 43°F
Feels Like 38°F  
Humidity 49% Dew Point 25°F Wind SSE 8 MPH Barometer 30.06 in.
Visibility 10 mi.
Report from a MADIS/MESONET weather station 4.8 mi. E of central Lake Simtustus
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Point Forecast at a Glance

SunDec 14
Sun Dec 14: Mostly Cloudy, High 57F, Low 42F
57
42
MonDec 15
Mon Dec 15: Rain Likely, High 64F, Low 44F
60%
64
44
TueDec 16
Tue Dec 16: Rain Likely, High 59F, Low 37F
60%
59
37
WedDec 17
Wed Dec 17: Rain, High 46F, Low 33F
50%
46
33
ThuDec 18
Thu Dec 18: Snow, High 50F, Low 37F
90%
50
37
FriDec 19
Fri Dec 19: Snow, High 47F, Low 32F
50%
47
32
SatDec 20
Sat Dec 20: Rain And Snow, High 45F
50%
45
 

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7-Day Temperature Trend

Week Ahead Summary

Cooling trend continues with high temperatures dropping from 57°F to 45°F. Unsettled weather expected with rain or snow likely on at least 7 days.

Climate Context

This week's forecast shows temperatures running 12°F above the historical average for December. Normal highs for this period are around 41°F with lows around 23°F.

This Date in Weather History

1924 - The temperature at Helena, MT, plunged 79 degrees in 24 hours, and 88 degrees in 34 hours. The mercury plummeted from 63 above to 25 below zero. At Fairfield MT the temperature plunged 84 degrees in just 12 hours, from 63 at Noon to 21 below zero at midnight.

More on this and other weather history

Lake Simtustus, OR 7 Day Weather Forecast Details

Sunday Dec 14

Mostly Cloudy

Day: Mostly cloudy, with a high near 57. South wind 6 to 8 mph.

Rain

Night: A 30 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 42. South wind 6 to 9 mph.

Monday Dec 15

Rain Likely

Day: Rain likely, mainly between 10am and 4pm. Partly sunny, with a high near 64. Southwest wind 14 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Rain

Night: A 40 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 44. Southwest wind 11 to 16 mph, with gusts as high as 32 mph.

Tuesday Dec 16

Rain Likely

Day: Rain likely, mainly after 4pm. Partly sunny, with a high near 59. Southwest wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Rain

Night: Rain, mainly before 4am. Low around 37. Breezy. Chance of precipitation is 100%.

Wednesday Dec 17

Rain

Day: A 50 percent chance of rain, mainly before 10am. Partly sunny, with a high near 46.

Snow

Night: A chance of rain before 1am, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.

Thursday Dec 18

Snow

Day: Rain likely, possibly mixed with snow before 7am, then rain. High near 50. Chance of precipitation is 90%.

Snow

Night: Rain before 4am, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 37.

Friday Dec 19

Snow

Day: Rain likely, possibly mixed with snow. Partly sunny, with a high near 47.

Rain And Snow

Night: A chance of rain and snow. Snow level 2600 feet. Partly cloudy, with a low around 32.

Saturday Dec 20

Rain And Snow

Day: A chance of rain and snow. Snow level 2400 feet rising to 3100 feet in the afternoon. Partly sunny, with a high near 45.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.