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As of 19:24 PDT

Weather in Umtanum, WA

79°Current weather

Umtanum, Saturday, 8 August, 19:24

Partly cloudy. Feels like 78°. High 83°, low 56°.

Pressure29.85 inHg
Wind10 mph W
Humidity30%
Visibility6.2 mi
Dew point43°
Sun, 0982° / 56°0Clear
82 °Clear

Umtanum, Sunday, 9 August

Clear. High 82°, low 56°.

Pressure29.85 inHg
Wind5.1 mph NW
Humidity16%
Visibility6.2 mi
Dew point36°
Mon, 1090° / 55°0Clear
90 °Clear

Umtanum, Monday, 10 August

Clear. High 90°, low 55°.

Pressure29.88 inHg
Wind10 mph W
Humidity17%
Visibility6.2 mi
Dew point36°
Tue, 1192° / 56°0Clear
92 °Clear

Umtanum, Tuesday, 11 August

Clear. High 92°, low 56°.

Pressure29.91 inHg
Wind4.9 mph NW
Humidity17%
Visibility6.2 mi
Dew point36°
Wed, 1289° / 59°0Clear
89 °Clear

Umtanum, Wednesday, 12 August

Clear. High 89°, low 59°.

Pressure29.83 inHg
Wind11.6 mph NW
Humidity21%
Visibility6.2 mi
Dew point40°
Thu, 1389° / 56°0Clear
89 °Clear

Umtanum, Thursday, 13 August

Clear. High 89°, low 56°.

Pressure29.80 inHg
Wind12.8 mph NW
Humidity19%
Visibility—
Dew point37°
Fri, 1489° / 59°0Clear
89 °Clear

Umtanum, Friday, 14 August

Clear. High 89°, low 59°.

Pressure29.94 inHg
Wind10 mph E
Humidity19%
Visibility—
Dew point37°
Sat, 1596° / 63°0Overcast
96 °Overcast

Umtanum, Saturday, 15 August

Overcast. High 96°, low 63°.

Pressure29.91 inHg
Wind11.1 mph S
Humidity12%
Visibility—
Dew point31°
Sun, 1698° / 64°0Clear
98 °Clear

Umtanum, Sunday, 16 August

Clear. High 98°, low 64°.

Pressure29.85 inHg
Wind20.1 mph NW
Humidity10%
Visibility—
Dew point30°
Mon, 1797° / 62°0Partly cloudy
97 °Partly cloudy

Umtanum, Monday, 17 August

Partly cloudy. High 97°, low 62°.

Pressure29.83 inHg
Wind14.7 mph NW
Humidity11%
Visibility—
Dew point31°
Tue, 1893° / 64°0Overcast
93 °Overcast

Umtanum, Tuesday, 18 August

Overcast. High 93°, low 64°.

Pressure29.85 inHg
Wind14.1 mph NW
Humidity12%
Visibility—
Dew point31°
Wed, 1987° / 59°0Overcast
87 °Overcast

Umtanum, Wednesday, 19 August

Overcast. High 87°, low 59°.

Pressure29.91 inHg
Wind18.8 mph NW
Humidity21%
Visibility—
Dew point40°
Thu, 2087° / 57°0Clear
87 °Clear

Umtanum, Thursday, 20 August

Clear. High 87°, low 57°.

Pressure29.83 inHg
Wind24 mph NW
Humidity20%
Visibility—
Dew point38°
Fri, 2190° / 53°0Clear
90 °Clear

Umtanum, Friday, 21 August

Clear. High 90°, low 53°.

Pressure29.85 inHg
Wind10.6 mph NW
Humidity15%
Visibility—
Dew point31°
Sat, 2293° / 59°0Overcast
93 °Overcast

Umtanum, Saturday, 22 August

Overcast. High 93°, low 59°.

Pressure29.77 inHg
Wind17 mph NW
Humidity12%
Visibility—
Dew point30°
Sun, 2389° / 58°0Partly cloudy
89 °Partly cloudy

Umtanum, Sunday, 23 August

Partly cloudy. High 89°, low 58°.

Pressure29.80 inHg
Wind22.5 mph NW
Humidity10%
Visibility—
Dew point23°

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 Umtanum, WA 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 Umtanum, WA 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.