Weather in Ahtanum, WA
Ahtanum, Monday, 19 October, 09:51
Overcast. Feels like 49°. High 63°, low 43°.
Monthly outlook for Ahtanum, WA: average high 62.2°, average low 44.2°. That is 3.6° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 20 October (69.9°), the coolest 24 October (34.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 62.7° | 57.8° | +2.7° |
| 29 October – 7 November | 61.3° | 51.6° | +5.4° |
| 8 November – 17 November | at normal | 47.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Yakima (4 mi).
0
Ahtanum, Tuesday, 20 October
Mostly clear. High 70°, low 46°.
0
Ahtanum, Wednesday, 21 October
Clear. High 68°, low 41°.
0Ahtanum, Thursday, 22 October
Overcast. High 66°, low 43°.
0Ahtanum, Friday, 23 October
Mostly clear. High 60°, low 41°.
0Ahtanum, Saturday, 24 October
Overcast. High 54°, low 35°.
0Ahtanum, Sunday, 25 October
Mostly clear. High 62°, low 43°.
0Ahtanum, Monday, 26 October
Mostly clear. High 63°, low 46°.
0Ahtanum, Tuesday, 27 October
Clear. High 62°, low 46°.
0Ahtanum, Wednesday, 28 October
Overcast. High 60°, low 46°.
0Ahtanum, Thursday, 29 October
Clear. High 61°, low 43°.
0Ahtanum, Friday, 30 October
Overcast. High 59°, low 45°.
0Ahtanum, Saturday, 31 October
Overcast. High 60°, low 47°.
0
Ahtanum, Sunday, 1 November
Partly cloudy. High 62°, low 45°.
0Ahtanum, Monday, 2 November
Overcast. High 64°, low 48°.
0Ahtanum, Tuesday, 3 November
Overcast. High 61°, low 48°.
0.12
Ahtanum, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.07Ahtanum, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Ahtanum, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Ahtanum, Saturday, 7 November
Climate normal for this date — 60-year average.
0.05Ahtanum, Sunday, 8 November
Climate normal for this date — 60-year average.
0.05Ahtanum, Monday, 9 November
Climate normal for this date — 60-year average.
0.06Ahtanum, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Ahtanum, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Ahtanum, Thursday, 12 November
Climate normal for this date — 60-year average.
0.08Ahtanum, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Ahtanum, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Ahtanum, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Ahtanum, Monday, 16 November
Climate normal for this date — 60-year average.
0.07Ahtanum, Tuesday, 17 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 Ahtanum, 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 Ahtanum, 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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