Weather in Umtanum, WA
Umtanum, Monday, 26 October, 16:00
Overcast. Feels like 51°. High 52°, low 42°.
Monthly outlook for Umtanum, WA: average high 49.1°, average low 37.2°. That is 1.2° below the climate normal for October. Precipitation is expected on 10 days (about 2.2 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 27 October (53.3°), the coolest 30 October (29.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 49.3° | 52.7° | -1.9° |
| 5 November – 14 November | 48.8° | 48.4° | +0.3° |
| 15 November – 24 November | at normal | 43.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Hillside Siding (9 mi).
0.14
Umtanum, Tuesday, 27 October
Light rain. High 53°, low 42°.
0.26Umtanum, Wednesday, 28 October
Light rain. High 49°, low 34°.
0.1Umtanum, Thursday, 29 October
Light rain. High 48°, low 32°.
0.04Umtanum, Friday, 30 October
Light rain. High 47°, low 29°.
0.07Umtanum, Saturday, 31 October
Light rain. High 48°, low 33°.
0Umtanum, Sunday, 1 November
Light rain. High 49°, low 33°.
0Umtanum, Monday, 2 November
Overcast. High 49°, low 38°.
0Umtanum, Tuesday, 3 November
Overcast. High 49°, low 37°.
0Umtanum, Wednesday, 4 November
Overcast. High 49°, low 38°.
0.01Umtanum, Thursday, 5 November
Light rain. High 53°, low 41°.
0.76Umtanum, Friday, 6 November
Rain. High 45°, low 44°.
0.02Umtanum, Saturday, 7 November
Light rain. High 53°, low 38°.
0.61Umtanum, Sunday, 8 November
Rain. High 42°, low 36°.
0.05Umtanum, Monday, 9 November
Light rain. High 53°, low 39°.
0.05Umtanum, Tuesday, 10 November
Light rain. High 47°, low 38°.
0.06
Umtanum, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.08
Umtanum, Thursday, 12 November
Climate normal for this date — 60-year average.
0.09Umtanum, Friday, 13 November
Climate normal for this date — 60-year average.
0.06Umtanum, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Umtanum, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Umtanum, Monday, 16 November
Climate normal for this date — 60-year average.
0.08Umtanum, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.05Umtanum, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.12Umtanum, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09Umtanum, Friday, 20 November
Climate normal for this date — 60-year average.
0.07Umtanum, Saturday, 21 November
Climate normal for this date — 60-year average.
0.09Umtanum, Sunday, 22 November
Climate normal for this date — 60-year average.
0.08Umtanum, Monday, 23 November
Climate normal for this date — 60-year average.
0.11Umtanum, Tuesday, 24 November
Climate normal for this date — 60-year average.
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.
Sun and moon today
Weather history
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