Weather in Lewiston, ID
Lewiston, Saturday, 17 October, 04:00
Overcast. Feels like 55°. High 74°, low 51°.
Monthly outlook for Lewiston, ID: average high 61.9°, average low 44.8°. That is 2.3° above the climate normal for October. Precipitation is expected on 4 days (about 0.3 inches), against a normal of 6 days and 1.2 inches. The warmest day looks like 17 October (74.1°), the coolest 28 October (39°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 17 October – 26 October | 65.5° | 60° | +3° |
| 27 October – 5 November | 56° | 53.3° | +1.5° |
| 6 November – 15 November | at normal | 49.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Culdesac (15 mi).
0
Lewiston, Sunday, 18 October
Clear. High 72°, low 44°.
0Lewiston, Monday, 19 October
Overcast. High 66°, low 47°.
0
Lewiston, Tuesday, 20 October
Mostly clear. High 67°, low 48°.
0
Lewiston, Wednesday, 21 October
Partly cloudy. High 68°, low 50°.
0Lewiston, Thursday, 22 October
Clear. High 72°, low 51°.
0.01
Lewiston, Friday, 23 October
Light rain. High 57°, low 49°.
0Lewiston, Saturday, 24 October
Clear. High 60°, low 43°.
0Lewiston, Sunday, 25 October
Light rain. High 58°, low 44°.
0.04Lewiston, Monday, 26 October
Light rain. High 61°, low 42°.
0.04Lewiston, Tuesday, 27 October
Light rain. High 53°, low 45°.
0.03Lewiston, Wednesday, 28 October
Light rain. High 57°, low 39°.
0.02Lewiston, Thursday, 29 October
Light rain. High 54°, low 42°.
0.06Lewiston, Friday, 30 October
Light rain. High 53°, low 39°.
0.05Lewiston, Saturday, 31 October
Light rain. High 56°, low 42°.
0Lewiston, Sunday, 1 November
Overcast. High 63°, low 41°.
0.07
Lewiston, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Lewiston, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.12Lewiston, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.1Lewiston, Thursday, 5 November
Climate normal for this date — 60-year average.
0.12Lewiston, Friday, 6 November
Climate normal for this date — 60-year average.
0.13Lewiston, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09Lewiston, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Lewiston, Monday, 9 November
Climate normal for this date — 60-year average.
0.06Lewiston, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Lewiston, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.1Lewiston, Thursday, 12 November
Climate normal for this date — 60-year average.
0.08Lewiston, Friday, 13 November
Climate normal for this date — 60-year average.
0.06Lewiston, Saturday, 14 November
Climate normal for this date — 60-year average.
0.05Lewiston, Sunday, 15 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, ID 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, ID 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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