Lake Simtustus, OR Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Clear 54°F
Feels Like 54°F  
Humidity 38% Dew Point 28°F Wind S 9 MPH Barometer 30.1 in.
Visibility 10 mi.
Report from a MADIS/MESONET weather station 4.8 mi. E of central Lake Simtustus
at

Point Forecast at a Glance

SunDec 14
Sun Dec 14: Rain, Low 47F
20%
 
47
MonDec 15
Mon Dec 15: Rain Likely, High 65F, Low 45F
70%
65
45
TueDec 16
Tue Dec 16: Rain, High 59F, Low 38F
30%
59
38
WedDec 17
Wed Dec 17: Rain Likely, High 47F, Low 34F
60%
47
34
ThuDec 18
Thu Dec 18: Rain, High 49F, Low 39F
90%
49
39
FriDec 19
Fri Dec 19: Rain Likely, High 48F, Low 31F
50%
48
31
SatDec 20
Sat Dec 20: Rain And Snow, High 46F, Low 31F
50%
46
31

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

Cooling trend continues with high temperatures dropping from 65°F to 46°F. Unsettled weather expected with rain on most days, including one day with wintry mix.

Climate Context

This week's forecast shows temperatures running 11°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

Rain

Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a steady temperature around 47. South wind 6 to 9 mph.

Monday Dec 15

Rain Likely

Day: Rain likely, mainly between 1pm and 4pm. Partly sunny, with a high near 65. Southwest wind 14 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Rain

Night: A 40 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 45. South wind 9 to 16 mph, with gusts as high as 32 mph.

Tuesday Dec 16

Rain

Day: A 30 percent chance of rain, mainly after 4pm. Partly sunny, with a high near 59. Southwest wind 11 to 16 mph, with gusts as high as 28 mph.

Rain

Night: Rain, mainly after 10pm. Low around 38. Breezy, with a south wind 23 to 25 mph, with gusts as high as 48 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday Dec 17

Rain Likely

Day: Rain likely, mainly before 10am. Mostly sunny, with a high near 47. Chance of precipitation is 60%.

Rain

Night: Rain, mainly after 4am. Low around 34. Chance of precipitation is 80%.

Thursday Dec 18

Rain

Day: Rain. High near 49. Chance of precipitation is 90%.

Rain

Night: Rain. Low around 39. Chance of precipitation is 90%.

Friday Dec 19

Rain Likely

Day: Rain likely, mainly before 10am. Partly sunny, with a high near 48.

Rain And Snow

Night: A chance of rain and snow. Snow level 2900 feet. Partly cloudy, with a low around 31.

Saturday Dec 20

Rain And Snow

Day: A chance of rain and snow. Snow level 2600 feet rising to 3400 feet in the afternoon. Mostly sunny, with a high near 46.

Rain And Snow

Night: A chance of rain and snow. Partly cloudy, with a low around 31.

Sunday Dec 21

Rain And Snow

Day: A chance of rain and snow. Partly sunny, with a high near 47.

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.