Ontario, OR Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Ontario, OR.

Current Conditions — Ontario, OR

ONTARIO (KONO)

Clear

50.0 F
Humidity:54%
Wind Speed: 0.0 mph
Barometer:29.95 in
Dewpoint:33.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 23 2026, 10:10 PM MDT
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5-Day Forecast — Ontario, OR

Thursday

High 62 °F
Forecast Missing
Thursday
Night
Low 37 °F
Mostly Cloudy
Friday

High 57 °F
Partly Sunny
Friday
Night
Low 32 °F
Mostly Clear
Saturday

High 59 °F
Partly Sunny
Saturday
Night
Low 35 °F
Partly Cloudy
Sunday

High 62 °F
Partly Sunny
Sunday
Night
Low 37 °F
Partly Cloudy
Monday

High 64 °F
Partly Sunny

Detailed Forecast — Ontario, OR

Thursday
Forecast Missing. High near 62°F. Wind 9 to 10 mph, with gusts as high as 18 mph.
Thursday Night
Mostly Cloudy. Low around 37°F. Wind 5 to 10 mph, with gusts as high as 17 mph.
Friday
Partly Sunny. High near 57°F. Wind 6 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly Clear. Low around 32°F. Wind 2 to 8 mph, with gusts as high as 16 mph.
Saturday
Partly Sunny. High near 59°F. Wind 2 to 6 mph, with gusts as high as 10 mph.
Saturday Night
Partly Cloudy. Low around 35°F. Wind 5 to 6 mph, with gusts as high as 10 mph.
Sunday
Partly Sunny. High near 62°F. Wind 5 to 8 mph, with gusts as high as 14 mph.
Sunday Night
Partly Cloudy. Low around 37°F. Wind 3 to 6 mph, with gusts as high as 9 mph.
Monday
Partly Sunny. High near 64°F. Wind 2 to 3 mph, with gusts as high as 9 mph.
Monday Night
Mostly Clear. Low around 39°F. Wind 2 to 3 mph, with gusts as high as 6 mph.
Tuesday
Partly Sunny. High near 66°F. Wind 1 to 3 mph, with gusts as high as 7 mph.
Tuesday Night
Partly Cloudy. Low around 41°F. Wind 2 to 3 mph, with gusts as high as 6 mph.
Wednesday
Mostly Sunny. High near 71°F. Wind 2 to 6 mph, with gusts as high as 12 mph.
Wednesday Night
Mostly Clear. Low around 44°F. Wind 3 to 6 mph, with gusts as high as 9 mph.
OR Radar
Current Radar • OR
Day 1 Outlook • April 24, 2026

Observation History — Ontario, OR

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
10:10 PM MDT 0.0 10.00 Clear -- 50.0 33.8 54% NA NA 29.95 1014.2
10:05 PM MDT 0.0 10.00 Clear -- 50.0 33.8 54% NA NA 29.95 1014.2
10:00 PM MDT 3.4 10.00 Clear -- 50.0 33.8 54% NA NA 29.95 1014.2
09:50 PM MDT 5.7 10.00 Clear -- 51.8 33.8 50% NA NA 29.94 1013.9
09:40 PM MDT 6.9 10.00 Clear -- 53.6 33.8 47% NA NA 29.94 1013.9
09:35 PM MDT 8.1 10.00 Clear -- 53.6 33.8 47% NA NA 29.93 1013.5
09:30 PM MDT 6.9 10.00 Clear -- 51.8 35.6 54% NA NA 29.93 1013.5
09:20 PM MDT 8.1 10.00 Clear -- 51.8 35.6 54% NA NA 29.93 1013.5
09:15 PM MDT 9.2 10.00 Clear -- 51.8 35.6 54% NA NA 29.93 1013.5
09:10 PM MDT 10.4 10.00 Clear -- 51.8 35.6 54% NA NA 29.93 1013.5
09:05 PM MDT 9.2 10.00 Clear -- 51.8 37.4 58% NA NA 29.93 1013.5
09:00 PM MDT 8.1 10.00 Clear -- 51.8 37.4 58% NA NA 29.93 1013.5
08:50 PM MDT 9.2 10.00 Clear -- 53.6 37.4 54% NA NA 29.93 1013.5
08:35 PM MDT 8.1 10.00 Clear -- 53.6 37.4 54% NA NA 29.93 1013.5
08:25 PM MDT 8.1 10.00 Clear -- 55.4 35.6 47% NA NA 29.93 1013.5
08:20 PM MDT NW 6.9 10.00 Clear -- 55.4 35.6 47% NA NA 29.93 1013.5
08:10 PM MDT 4.6 10.00 Clear -- 57.2 35.6 44% NA NA 29.93 1013.5
08:05 PM MDT 8.1 10.00 Clear -- 57.2 35.6 44% NA NA 29.93 1013.5
08:00 PM MDT 9.2 10.00 Clear -- 57.2 35.6 44% NA NA 29.93 1013.5
07:50 PM MDT 8.1 10.00 Clear -- 57.2 35.6 44% NA NA 29.94 1013.9
07:40 PM MDT 8.1 10.00 Clear -- 57.2 37.4 47% NA NA 29.94 1013.9
07:35 PM MDT 9.2 10.00 Clear -- 57.2 37.4 47% NA NA 29.93 1013.5
07:25 PM MDT 12.7 10.00 Clear -- 59.0 37.4 45% NA NA 29.94 1013.9
07:20 PM MDT 12.7 10.00 Clear -- 59.0 37.4 45% NA NA 29.94 1013.9

Regional Weather Observation

ONTARIO (KONO)

Clear
50.0 F

BAKER (KBKE)

Clear
42.8 F

CALDWELL (KEUL)

Clear
50.0 F

MCCALL (KMYL)

Light Snow and Fog/Mist
33.8 F

NAMPA (KMAN)

Clear
53.6 F

BOISE (KBOI)

Clear
51.8 F
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