Weather in Lewiston, CA
Lewiston, Wednesday, 21 October, 08:34
Mostly clear. Feels like 48°. High 78°, low 49°.
Monthly outlook for Lewiston, CA: average high 67.5°, average low 44.4°. That is 1.2° above the climate normal for October. Precipitation is expected on 1 day (about 0.5 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 21 October (78.4°), the coolest 31 October (36.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 70.1° | 66.3° | +2.1° |
| 31 October – 9 November | 63.3° | 61.8° | +0.8° |
| 10 November – 19 November | at normal | 56.1° | — |
October records over 66 years
0.38
Lewiston, Thursday, 22 October
Rain. High 62°, low 48°.
0
Lewiston, Friday, 23 October
Clear. High 67°, low 47°.
0Lewiston, Saturday, 24 October
Clear. High 74°, low 44°.
0
Lewiston, Sunday, 25 October
Overcast. High 70°, low 47°.
0Lewiston, Monday, 26 October
Clear. High 69°, low 47°.
0
Lewiston, Tuesday, 27 October
Partly cloudy. High 71°, low 47°.
0Lewiston, Wednesday, 28 October
Partly cloudy. High 71°, low 44°.
0Lewiston, Thursday, 29 October
Clear. High 68°, low 44°.
0Lewiston, Friday, 30 October
Clear. High 71°, low 41°.
0Lewiston, Saturday, 31 October
Overcast. High 64°, low 37°.
0Lewiston, Sunday, 1 November
Overcast. High 69°, low 41°.
0Lewiston, Monday, 2 November
Overcast. High 71°, low 43°.
0.02Lewiston, Tuesday, 3 November
Light rain. High 58°, low 48°.
0.03Lewiston, Wednesday, 4 November
Light rain. High 63°, low 44°.
0.01Lewiston, Thursday, 5 November
Light rain. High 55°, low 39°.
0.14
Lewiston, Friday, 6 November
Climate normal for this date — 60-year average.
0.21Lewiston, Saturday, 7 November
Climate normal for this date — 60-year average.
0.17Lewiston, Sunday, 8 November
Climate normal for this date — 60-year average.
0.22Lewiston, Monday, 9 November
Climate normal for this date — 60-year average.
0.21Lewiston, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.21Lewiston, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.15Lewiston, Thursday, 12 November
Climate normal for this date — 60-year average.
0.28Lewiston, Friday, 13 November
Climate normal for this date — 60-year average.
0.15Lewiston, Saturday, 14 November
Climate normal for this date — 60-year average.
0.19Lewiston, Sunday, 15 November
Climate normal for this date — 60-year average.
0.22Lewiston, Monday, 16 November
Climate normal for this date — 60-year average.
0.19Lewiston, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.12Lewiston, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.23Lewiston, Thursday, 19 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 Lewiston, CA 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 Lewiston, CA 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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