As of 03:27 PST

Weather in Umtanum, WA

43°

Umtanum, Sunday, 15 November, 03:27

Overcast. Feels like 39°. High 47°, low 33°.

Pressure29.74 inHg

Wind6.9 mph E

Humidity92%

Visibility6.2 mi

Dew point41°

See detailed hourly forecast

Monthly outlook for Umtanum, WA: average high 43.9°, average low 34°. That is 1.1° above the climate normal for November. Precipitation is expected on 6 days (about 2.0 inches), against a normal of 6 days and 1.3 inches. The warmest day looks like 26 November (48.8°), the coolest 17 November (30.3°).

43.9°/34°

Average high / low

+1.1°

Above normal

6 / 6

Wet days / normal

2.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
15 November – 24 November	42.9°	43.4°	-0.3°
25 November – 4 December	45.5°	39.1°	+3.5°
5 December – 14 December	at normal	36.6°	—

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).

Mon, 1646° / 33°

0.01

46 °

Umtanum, Monday, 16 November

Light rain. High 46°, low 33°.

Pressure30.09 inHg

Wind1.7 mph NE

Humidity78%

Visibility6.2 mi

Dew point38°

Tue, 1746° / 30°

46 °

Umtanum, Tuesday, 17 November

Clear. High 46°, low 30°.

Pressure30.03 inHg

Wind0.4 mph N

Humidity63%

Visibility6.2 mi

Dew point32°

Wed, 1843° / 31°

0.05

43 °

Umtanum, Wednesday, 18 November

Light rain. High 43°, low 31°.

Pressure30.03 inHg

Wind5.3 mph NE

Humidity70%

Visibility6.2 mi

Dew point32°

Thu, 1944° / 35°

44 °

Umtanum, Thursday, 19 November

Overcast. High 44°, low 35°.

Pressure30.15 inHg

Wind4.5 mph W

Humidity80%

Visibility—

Dew point33°

Fri, 2048° / 34°

48 °

Umtanum, Friday, 20 November

Clear. High 48°, low 34°.

Pressure30.00 inHg

Wind2.7 mph W

Humidity58%

Visibility—

Dew point29°

Sat, 2138° / 35°

0.44

38 °

Umtanum, Saturday, 21 November

Snow. High 38°, low 35°.

Pressure30.09 inHg

Wind5.3 mph NE

Humidity90%

Visibility—

Dew point35°

Sun, 2236° / 34°

0.47

36 °

Umtanum, Sunday, 22 November

Snow. High 36°, low 34°.

Pressure30.06 inHg

Wind2.8 mph N

Humidity99%

Visibility—

Dew point36°

Mon, 2338° / 36°

0.57

38 °

Umtanum, Monday, 23 November

Rain. High 38°, low 36°.

Pressure30.03 inHg

Wind6.2 mph NE

Humidity96%

Visibility—

Dew point36°

Tue, 2442° / 38°

0.31

42 °

Umtanum, Tuesday, 24 November

Light rain. High 42°, low 38°.

Pressure29.77 inHg

Wind3.9 mph N

Humidity99%

Visibility—

Dew point40°

Wed, 2547° / 39°

0.03

47 °

Umtanum, Wednesday, 25 November

Light rain. High 47°, low 39°.

Pressure29.77 inHg

Wind6.2 mph NW

Humidity95%

Visibility—

Dew point41°

Thu, 2649° / 35°

49 °

Umtanum, Thursday, 26 November

Clear. High 49°, low 35°.

Pressure30.21 inHg

Wind6 mph NW

Humidity68%

Visibility—

Dew point33°

Fri, 2744° / 34°

44 °

Umtanum, Friday, 27 November

Overcast. High 44°, low 34°.

Pressure30.45 inHg

Wind3.8 mph N

Humidity80%

Visibility—

Dew point33°

Sat, 2845° / 33°

45 °

Umtanum, Saturday, 28 November

Clear. High 45°, low 33°.

Pressure30.30 inHg

Wind5 mph NW

Humidity76%

Visibility—

Dew point32°

Sun, 2945° / 33°

45 °

Umtanum, Sunday, 29 November

Clear. High 45°, low 33°.

Pressure30.27 inHg

Wind4.1 mph NW

Humidity70%

Visibility—

Dew point30°

Mon, 3043° / 32°

43 °

Umtanum, Monday, 30 November

Mostly clear. High 43°, low 32°.

Pressure30.27 inHg

Wind3.8 mph N

Humidity74%

Visibility—

Dew point30°

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

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)

Fri, 1137° / 26°

0.09

37 °

Umtanum, Friday, 11 December

Climate normal for this date — 60-year average.

Average high37°

Average low26°

Average precipitation0.09 in

Chance of precipitation38%

Record high57° (2025)

Record low3° (1963)

Sat, 1236° / 25°

0.1

36 °

Umtanum, Saturday, 12 December

Climate normal for this date — 60-year average.

Average high36°

Average low25°

Average precipitation0.1 in

Chance of precipitation47%

Record high53° (2025)

Record low8° (2000)

Sun, 1337° / 25°

0.09

37 °

Umtanum, Sunday, 13 December

Climate normal for this date — 60-year average.

Average high37°

Average low25°

Average precipitation0.09 in

Chance of precipitation35%

Record high52° (2025)

Record low-1° (1967)

Mon, 1436° / 25°

0.08

36 °

Umtanum, Monday, 14 December

Climate normal for this date — 60-year average.

Average high36°

Average low25°

Average precipitation0.08 in

Chance of precipitation42%

Record high49° (2004)

Record low4° (1967)

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.