Monthly outlook for Umtanum, WA: average high 49.8°, average low 35.8°. That is 1.4° below the climate normal for October. Precipitation is expected on 6 days (about 0.8 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 7 November (55.3°), the coolest 31 October (26.9°).
49.8°/35.8°
Average high / low
−1.4°
Below normal
6 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
50.4°
53.8°
-1.9°
3 November – 12 November
48.9°
49.2°
-0.2°
13 November – 22 November
at normal
44.8°
—
October records over 66 years
87.8°6 October 2014All-time high
17.6°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Hillside Siding (9 mi).
Sun, 2552° / 39°0.01
52 °
Umtanum, Sunday, 25 October
Light rain. High 52°, low 39°.
Pressure30.06 inHg
Wind2.4 mph SE
Humidity48%
Visibility6.2 mi
Dew point33°
Mon, 2654° / 41°0.03
54 °
Umtanum, Monday, 26 October
Light rain. High 54°, low 41°.
Pressure30.03 inHg
Wind2.2 mph NE
Humidity58%
Visibility6.2 mi
Dew point36°
Tue, 2754° / 34°0.04
54 °
Umtanum, Tuesday, 27 October
Light rain. High 54°, low 34°.
Pressure30.03 inHg
Wind0.7 mph SW
Humidity58%
Visibility6.2 mi
Dew point38°
Wed, 2847° / 37°0.07
47 °
Umtanum, Wednesday, 28 October
Light rain. High 47°, low 37°.
Pressure29.94 inHg
Wind2.8 mph S
Humidity78%
Visibility6.2 mi
Dew point39°
Thu, 2950° / 32°0.02
50 °
Umtanum, Thursday, 29 October
Light rain. High 50°, low 32°.
Pressure29.91 inHg
Wind6.5 mph S
Humidity68%
Visibility—
Dew point33°
Fri, 3048° / 31°0
48 °
Umtanum, Friday, 30 October
Partly cloudy. High 48°, low 31°.
Pressure29.97 inHg
Wind8 mph NW
Humidity57%
Visibility—
Dew point27°
Sat, 3148° / 27°0
48 °
Umtanum, Saturday, 31 October
Clear. High 48°, low 27°.
Pressure30.06 inHg
Wind6.9 mph NW
Humidity48%
Visibility—
Dew point21°
Sun, 0152° / 31°0
52 °
Umtanum, Sunday, 1 November
Overcast. High 52°, low 31°.
Pressure30.30 inHg
Wind6.3 mph E
Humidity44%
Visibility—
Dew point22°
Mon, 0249° / 33°0
49 °
Umtanum, Monday, 2 November
Overcast. High 49°, low 33°.
Pressure30.09 inHg
Wind4.9 mph N
Humidity47%
Visibility—
Dew point22°
Tue, 0348° / 34°0.03
48 °
Umtanum, Tuesday, 3 November
Light rain. High 48°, low 34°.
Pressure29.91 inHg
Wind4.5 mph SE
Humidity43%
Visibility—
Dew point21°
Wed, 0443° / 35°0.09
43 °
Umtanum, Wednesday, 4 November
Light rain. High 43°, low 35°.
Pressure29.91 inHg
Wind5.5 mph S
Humidity78%
Visibility—
Dew point35°
Thu, 0546° / 39°0.17
46 °
Umtanum, Thursday, 5 November
Light rain. High 46°, low 39°.
Pressure29.88 inHg
Wind3.1 mph N
Humidity88%
Visibility—
Dew point40°
Fri, 0651° / 44°0.06
51 °
Umtanum, Friday, 6 November
Light rain. High 51°, low 44°.
Pressure30.03 inHg
Wind4 mph E
Humidity89%
Visibility—
Dew point43°
Sat, 0755° / 46°0.16
55 °
Umtanum, Saturday, 7 November
Light rain. High 55°, low 46°.
Pressure29.85 inHg
Wind5.5 mph E
Humidity82%
Visibility—
Dew point45°
Sun, 0850° / 37°0.12
50 °
Umtanum, Sunday, 8 November
Light rain. High 50°, low 37°.
Pressure29.80 inHg
Wind14.1 mph SW
Humidity61%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0948° / 34°0.06
48 °
Umtanum, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.06 in
Chance of precipitation30%
Record high61° (2016)
Record low24° (1986)
Tue, 1048° / 33°0.06
48 °
Umtanum, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation28%
Record high63° (1989)
Record low9° (1986)
Wed, 1148° / 33°0.06
48 °
Umtanum, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation35%
Record high63° (1990)
Record low1° (1985)
Thu, 1248° / 33°0.08
48 °
Umtanum, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.08 in
Chance of precipitation25%
Record high65° (1999)
Record low-3° (1985)
Fri, 1347° / 34°0.09
47 °
Umtanum, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.09 in
Chance of precipitation37%
Record high64° (1999)
Record low12° (1985)
Sat, 1447° / 34°0.06
47 °
Umtanum, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.06 in
Chance of precipitation22%
Record high62° (2021)
Record low10° (1964)
Sun, 1547° / 34°0.06
47 °
Umtanum, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.06 in
Chance of precipitation32%
Record high58° (2021)
Record low13° (1964)
Mon, 1646° / 34°0.06
46 °
Umtanum, Monday, 16 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.06 in
Chance of precipitation37%
Record high61° (1976)
Record low17° (1964)
Tue, 1746° / 33°0.08
46 °
Umtanum, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.08 in
Chance of precipitation42%
Record high61° (1976)
Record low17° (1987)
Wed, 1845° / 31°0.05
45 °
Umtanum, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.05 in
Chance of precipitation27%
Record high57° (2008)
Record low14° (1994)
Thu, 1944° / 31°0.12
44 °
Umtanum, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.12 in
Chance of precipitation50%
Record high56° (1989)
Record low-5° (1985)
Fri, 2044° / 31°0.09
44 °
Umtanum, Friday, 20 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.09 in
Chance of precipitation33%
Record high54° (1971)
Record low10° (1985)
Sat, 2142° / 29°0.07
42 °
Umtanum, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.07 in
Chance of precipitation32%
Record high54° (1989)
Record low1° (1985)
Sun, 2241° / 28°0.09
41 °
Umtanum, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.09 in
Chance of precipitation37%
Record high54° (1990)
Record low6° (1985)
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.