National Weather Service

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SCN26-34: Discontinuation of the Max/Min Temperature and Precipitation Table Product (RTP) for all NWS Alaska Region, Eastern Region, and Western Region Offices: Effective May 6, 2026
Easter Weather History

Current conditions at

Ontario Municipal Airport (KONO)

Lat: 44.01424°NLon: 117.00808°WElev: 2185.0ft.

Overcast

43°F

6°C

Humidity	96%
Wind Speed	N 0 MPH
Barometer	29.77 in (1008.13 mb)
Dewpoint	42°F (6°C)
Visibility	10.00 mi
Last update	01 Apr 12:53 AM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Ontario OR

Overnight
Low: 42 °F
Chance
Showers and
Patchy Fog
Wednesday
High: 58 °F
Chance
Showers then
Showers
Wednesday Night
Low: 39 °F
Showers
Thursday
High: 53 °F
Chance
Rain/Snow
then Showers
Likely
Thursday Night
Low: 32 °F
Mostly Clear
Friday
High: 58 °F
Sunny
Friday Night
Low: 34 °F
Mostly Clear
then Patchy
Fog
Saturday
High: 64 °F
Patchy Fog
then Sunny
Saturday Night
Low: 38 °F
Clear

Detailed Forecast

Overnight

A 40 percent chance of showers before 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 42. Calm wind.

Wednesday

Showers and possibly a thunderstorm. High near 58. Light south southeast wind becoming south 5 to 10 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms between 2am and 3am. Low around 39. South southeast wind 9 to 11 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

A chance of rain showers before 9am, then a chance of rain and snow showers between 9am and noon, then rain showers likely after noon. Some thunder is also possible. Mostly cloudy, with a high near 53. West southwest wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Thursday Night

Mostly clear, with a low around 32. West northwest wind 6 to 16 mph, with gusts as high as 25 mph.

Friday

Sunny, with a high near 58.

Friday Night

Patchy fog after 5am. Otherwise, clear, with a low around 34.

Saturday

Patchy fog before 8am. Otherwise, sunny, with a high near 64.

Saturday Night

Clear, with a low around 38.

Sunday

Sunny, with a high near 70.