As of 06:18 PST

Weather in Umtanum, WA

41°

Umtanum, Wednesday, 11 November, 06:18

Fog. Feels like 39°. High 55°, low 41°.

Pressure30.12 inHg

Wind3.4 mph E

Humidity100%

Visibility0.2 mi

Dew point41°

See detailed hourly forecast

Monthly outlook for Umtanum, WA: average high 45.9°, average low 37.3°. That is 1° above the climate normal for November. Precipitation is expected on 8 days (about 1.6 inches), against a normal of 6 days and 1.3 inches. The warmest day looks like 12 November (57.2°), the coolest 20 November (29.3°).

45.9°/37.3°

Average high / low

+1°

Above normal

8 / 6

Wet days / normal

1.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
11 November – 20 November	47.7°	46.1°	+0.9°
21 November – 30 November	42.9°	40.1°	+1.6°
1 December – 10 December	at normal	37.5°	—

November records over 66 years

65.1°3 November 1975All-time high

-13.5°23 November 1985All-time low

Climate normals and records are computed from the nearest reference point — Hillside Siding (9 mi).

Thu, 1257° / 43°

57 °

Umtanum, Thursday, 12 November

Overcast. High 57°, low 43°.

Pressure29.83 inHg

Wind1.2 mph SE

Humidity65%

Visibility6.2 mi

Dew point44°

Fri, 1356° / 40°

0.04

56 °

Umtanum, Friday, 13 November

Light rain. High 56°, low 40°.

Pressure29.35 inHg

Wind2.4 mph E

Humidity60%

Visibility6.2 mi

Dew point41°

Sat, 1452° / 39°

52 °

Umtanum, Saturday, 14 November

Clear. High 52°, low 39°.

Pressure29.71 inHg

Wind6.4 mph S

Humidity73%

Visibility6.2 mi

Dew point41°

Sun, 1546° / 40°

0.14

46 °

Umtanum, Sunday, 15 November

Light rain. High 46°, low 40°.

Pressure29.88 inHg

Wind1.8 mph SE

Humidity90%

Visibility—

Dew point40°

Mon, 1650° / 38°

0.04

50 °

Umtanum, Monday, 16 November

Light rain. High 50°, low 38°.

Pressure29.94 inHg

Wind6.6 mph NW

Humidity88%

Visibility—

Dew point42°

Tue, 1748° / 35°

48 °

Umtanum, Tuesday, 17 November

Clear. High 48°, low 35°.

Pressure30.00 inHg

Wind5.8 mph NW

Humidity61%

Visibility—

Dew point30°

Wed, 1837° / 34°

0.5

37 °

Umtanum, Wednesday, 18 November

Snow. High 37°, low 34°.

Pressure29.80 inHg

Wind5 mph E

Humidity88%

Visibility—

Dew point34°

Thu, 1937° / 34°

0.2

37 °

Umtanum, Thursday, 19 November

Snow. High 37°, low 34°.

Pressure30.00 inHg

Wind3.1 mph SW

Humidity100%

Visibility—

Dew point35°

Fri, 2039° / 29°

39 °

Umtanum, Friday, 20 November

Overcast. High 39°, low 29°.

Pressure30.42 inHg

Wind4.1 mph NW

Humidity87%

Visibility—

Dew point31°

Sat, 2136° / 30°

36 °

Umtanum, Saturday, 21 November

Overcast. High 36°, low 30°.

Pressure30.39 inHg

Wind2.7 mph N

Humidity89%

Visibility—

Dew point31°

Sun, 2239° / 33°

39 °

Umtanum, Sunday, 22 November

Overcast. High 39°, low 33°.

Pressure30.21 inHg

Wind3.5 mph SE

Humidity81%

Visibility—

Dew point31°

Mon, 2337° / 35°

0.28

37 °

Umtanum, Monday, 23 November

Light rain. High 37°, low 35°.

Pressure30.15 inHg

Wind4 mph E

Humidity92%

Visibility—

Dew point34°

Tue, 2449° / 37°

0.16

49 °

Umtanum, Tuesday, 24 November

Light rain. High 49°, low 37°.

Pressure30.06 inHg

Wind4.9 mph NW

Humidity97%

Visibility—

Dew point40°

Wed, 2547° / 43°

0.2

47 °

Umtanum, Wednesday, 25 November

Light rain. High 47°, low 43°.

Pressure30.12 inHg

Wind5.1 mph NW

Humidity87%

Visibility—

Dew point42°

Thu, 2648° / 44°

0.01

48 °

Umtanum, Thursday, 26 November

Light rain. High 48°, low 44°.

Pressure29.97 inHg

Wind4.7 mph NW

Humidity87%

Visibility—

Dew point43°

From day 17 onward the outlook is built from 60-year climate statistics

Fri, 2740° / 28°

0.08

40 °

Umtanum, Friday, 27 November

Climate normal for this date — 60-year average.

Average high40°

Average low28°

Average precipitation0.08 in

Chance of precipitation40%

Record high56° (2014)

Record low-1° (1979)

Sat, 2840° / 27°

0.07

40 °

Umtanum, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high40°

Average low27°

Average precipitation0.07 in

Chance of precipitation30%

Record high58° (2021)

Record low2° (1985)

Sun, 2939° / 27°

0.07

39 °

Umtanum, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high39°

Average low27°

Average precipitation0.07 in

Chance of precipitation40%

Record high56° (2021)

Record low-5° (1985)

Mon, 3038° / 26°

0.09

38 °

Umtanum, Monday, 30 November

Climate normal for this date — 60-year average.

Average high38°

Average low26°

Average precipitation0.09 in

Chance of precipitation40%

Record high55° (2021)

Record low-1° (1985)

Tue, 0139° / 27°

0.12

39 °

Umtanum, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high39°

Average low27°

Average precipitation0.12 in

Chance of precipitation40%

Record high60° (2021)

Record low-8° (1985)

Wed, 0239° / 27°

0.16

39 °

Umtanum, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high39°

Average low27°

Average precipitation0.16 in

Chance of precipitation43%

Record high59° (2021)

Record low4° (2022)

Thu, 0338° / 27°

0.11

38 °

Umtanum, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high38°

Average low27°

Average precipitation0.11 in

Chance of precipitation35%

Record high52° (1982)

Record low4° (1984)

Fri, 0438° / 26°

0.11

38 °

Umtanum, Friday, 4 December

Climate normal for this date — 60-year average.

Average high38°

Average low26°

Average precipitation0.11 in

Chance of precipitation45%

Record high51° (2012)

Record low1° (1984)

Sat, 0537° / 25°

0.06

37 °

Umtanum, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high37°

Average low25°

Average precipitation0.06 in

Chance of precipitation30%

Record high49° (1989)

Record low7° (1984)

Sun, 0637° / 26°

0.07

37 °

Umtanum, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high37°

Average low26°

Average precipitation0.07 in

Chance of precipitation35%

Record high50° (1989)

Record low7° (1998)

Mon, 0736° / 25°

0.07

36 °

Umtanum, Monday, 7 December

Climate normal for this date — 60-year average.

Average high36°

Average low25°

Average precipitation0.07 in

Chance of precipitation32%

Record high50° (1965)

Record low-2° (1971)

Tue, 0837° / 25°

0.08

37 °

Umtanum, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high37°

Average low25°

Average precipitation0.08 in

Chance of precipitation32%

Record high54° (2015)

Record low1° (1972)

Wed, 0936° / 25°

0.12

36 °

Umtanum, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high36°

Average low25°

Average precipitation0.12 in

Chance of precipitation47%

Record high51° (2015)

Record low6° (1985)

Thu, 1038° / 26°

0.12

38 °

Umtanum, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high38°

Average low26°

Average precipitation0.12 in

Chance of precipitation40%

Record high58° (2025)

Record low2° (1961)

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.