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As of 12:23 MDT

Weather in Ontario, OR

87°Current weather

Ontario, Saturday, 8 August, 12:23

Clear. Feels like 84°. High 101°, low 64°.

Pressure29.94 inHg
Wind5.4 mph NW
Humidity27%
Visibility6.2 mi
Dew point42°
Sun, 0997° / 61°0Clear
97 °Clear

Ontario, Sunday, 9 August

Clear. High 97°, low 61°.

Pressure29.83 inHg
Wind5.3 mph NW
Humidity8%
Visibility6.2 mi
Dew point21°
Mon, 10102° / 61°0Clear
102 °Clear

Ontario, Monday, 10 August

Clear. High 102°, low 61°.

Pressure29.85 inHg
Wind6.2 mph NW
Humidity12%
Visibility6.2 mi
Dew point30°
Tue, 11102° / 65°0Clear
102 °Clear

Ontario, Tuesday, 11 August

Clear. High 102°, low 65°.

Pressure29.88 inHg
Wind5.4 mph N
Humidity11%
Visibility6.2 mi
Dew point28°
Wed, 12101° / 67°0Clear
101 °Clear

Ontario, Wednesday, 12 August

Clear. High 101°, low 67°.

Pressure29.80 inHg
Wind8.4 mph NW
Humidity16%
Visibility6.2 mi
Dew point38°
Thu, 1398° / 66°0Overcast
98 °Overcast

Ontario, Thursday, 13 August

Overcast. High 98°, low 66°.

Pressure29.74 inHg
Wind9.3 mph NW
Humidity18%
Visibility—
Dew point37°
Fri, 1497° / 66°0Overcast
97 °Overcast

Ontario, Friday, 14 August

Overcast. High 97°, low 66°.

Pressure29.83 inHg
Wind8.8 mph NW
Humidity13%
Visibility—
Dew point29°
Sat, 1591° / 76°0Overcast
91 °Overcast

Ontario, Saturday, 15 August

Overcast. High 91°, low 76°.

Pressure29.97 inHg
Wind13.3 mph W
Humidity24%
Visibility—
Dew point42°
Sun, 16101° / 66°0Clear
101 °Clear

Ontario, Sunday, 16 August

Clear. High 101°, low 66°.

Pressure29.97 inHg
Wind19.9 mph W
Humidity27%
Visibility—
Dew point47°
Mon, 17101° / 66°0Overcast
101 °Overcast

Ontario, Monday, 17 August

Overcast. High 101°, low 66°.

Pressure29.97 inHg
Wind7.7 mph NE
Humidity17%
Visibility—
Dew point37°
Tue, 1888° / 64°0.18Rain
88 °Rain

Ontario, Tuesday, 18 August

Rain. High 88°, low 64°.

Pressure30.12 inHg
Wind30.2 mph W
Humidity58%
Visibility—
Dew point59°
Wed, 19105° / 65°0Partly cloudy
105 °Partly cloudy

Ontario, Wednesday, 19 August

Partly cloudy. High 105°, low 65°.

Pressure29.94 inHg
Wind7.8 mph SE
Humidity23%
Visibility—
Dew point42°
Thu, 2099° / 68°0.02Light rain
99 °Light rain

Ontario, Thursday, 20 August

Light rain. High 99°, low 68°.

Pressure29.80 inHg
Wind13.6 mph SE
Humidity23%
Visibility—
Dew point46°
Fri, 2197° / 69°0Overcast
97 °Overcast

Ontario, Friday, 21 August

Overcast. High 97°, low 69°.

Pressure29.88 inHg
Wind11.5 mph SE
Humidity26%
Visibility—
Dew point48°
Sat, 2292° / 67°0Light rain
92 °Light rain

Ontario, Saturday, 22 August

Light rain. High 92°, low 67°.

Pressure29.97 inHg
Wind12.5 mph NW
Humidity33%
Visibility—
Dew point48°
Sun, 2396° / 62°0Clear
96 °Clear

Ontario, Sunday, 23 August

Clear. High 96°, low 62°.

Pressure29.97 inHg
Wind9.4 mph NW
Humidity11%
Visibility—
Dew point21°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Ontario, OR are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Ontario, OR since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.