Lewiston weather in October: Lewiston, Idaho: normal highs, lows, rain and records for October
Lewiston in October has a normal high of 63°F and a normal low of 42°F, a daily mean of 53°F, falling from 72°F on the 1st to 55°F by the 31st. Measurable precipitation falls on 9 days in a normal October, 1.08 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 17°C and low of 6°C, 27 mm of precipitation in October.
- NOAA stationLewiston Airport
- Station IDUSW00024149
- Location46.37°N 117.02°W
- Elevation1,436 ft (438 m)
- Population34,693
- Jan 42° 30°
- Feb 47° 32°
- Mar 55° 36°
- Apr 62° 41°
- May 72° 48°
- Jun 79° 54°
- Jul 91° 61°
- Aug 90° 60°
- Sep 80° 52°
- Oct 63° 42°
- Nov 49° 35°
- Dec 41° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lewiston in October?
The normal high is 63°F and the normal low 42°F, for a daily mean of 52.5°F. October is 13.4°F cooler than September and 10.9°F warmer than November. October is the 6th warmest month of the year in Lewiston and the 8th wettest. Across the month the normal high falls 17°F, from 72°F on October 1 to 55°F on October 31. From one year to the next October's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 50°F and 55°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 72°F | 47°F | 22% | 8% |
| October 8 | 68°F | 45°F | 24% | 10% |
| October 15 | 63°F | 42°F | 27% | 11% |
| October 22 | 59°F | 40°F | 30% | 12% |
| October 31 | 55°F | 38°F | 33% | 14% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 72°F | 47°F | 22% | 8% | 11 h 50 min |
| October 2 | 71°F | 47°F | 22% | 9% | 11 h 40 min |
| October 3 | 71°F | 46°F | 22% | 9% | 11 h 40 min |
| October 4 | 70°F | 46°F | 23% | 9% | 11 h 40 min |
| October 5 | 70°F | 46°F | 23% | 9% | 11 h 30 min |
| October 6 | 69°F | 45°F | 24% | 9% | 11 h 30 min |
| October 7 | 68°F | 45°F | 24% | 10% | 11 h 30 min |
| October 8 | 68°F | 45°F | 24% | 10% | 11 h 20 min |
| October 9 | 67°F | 44°F | 25% | 10% | 11 h 20 min |
| October 10 | 66°F | 44°F | 25% | 10% | 11 h 20 min |
| October 11 | 66°F | 44°F | 26% | 10% | 11 h 10 min |
| October 12 | 65°F | 43°F | 26% | 10% | 11 h 10 min |
| October 13 | 65°F | 43°F | 26% | 11% | 11 h 10 min |
| October 14 | 64°F | 42°F | 27% | 11% | 11 h |
| October 15 | 63°F | 42°F | 27% | 11% | 11 h |
| October 16 | 63°F | 42°F | 27% | 11% | 11 h |
| October 17 | 62°F | 41°F | 28% | 11% | 10 h 50 min |
| October 18 | 62°F | 41°F | 28% | 11% | 10 h 50 min |
| October 19 | 61°F | 41°F | 28% | 12% | 10 h 50 min |
| October 20 | 61°F | 41°F | 29% | 12% | 10 h 40 min |
| October 21 | 60°F | 40°F | 29% | 12% | 10 h 40 min |
| October 22 | 59°F | 40°F | 30% | 12% | 10 h 40 min |
| October 23 | 59°F | 40°F | 30% | 12% | 10 h 30 min |
| October 24 | 58°F | 39°F | 30% | 13% | 10 h 30 min |
| October 25 | 58°F | 39°F | 31% | 13% | 10 h 30 min |
| October 26 | 57°F | 39°F | 31% | 13% | 10 h 30 min |
| October 27 | 57°F | 39°F | 31% | 13% | 10 h 20 min |
| October 28 | 56°F | 38°F | 32% | 13% | 10 h 20 min |
| October 29 | 56°F | 38°F | 32% | 13% | 10 h 20 min |
| October 30 | 55°F | 38°F | 32% | 14% | 10 h 10 min |
| October 31 | 55°F | 38°F | 33% | 14% | 10 h 10 min |
- Normal high
- 63°FOctober average
- Normal low
- 42°FOctober average
- Precipitation
- 1.08 inmonth total
- Days with precipitation
- 90.01 inch or more
- Nights at 32°F or colder
- 3
- Daylight
- 11 h 50 min to 10 h 10 minOctober 1 to October 31
- Days at 70°F or more
- 6
- Days at 80°F or more
- 1
- Sunshine
- 73%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024149; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lewiston in October?
On a given October day the chance of 0.01 inch or more is 27% on average, highest around October 31 (33%). In all, 1.08 in falls on 9 days of a normal October.
In a normal October in Lewiston, 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024149.
How humid and windy is Lewiston in October?
At 3 p.m. the normal temperature is 53°F with 52% relative humidity and a dew point of 36°F; at 6 a.m. it is 40°F with 78% humidity. The wind averages 4.7 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 40°F | 34°F | 78% | 3.9 mph | – |
| 9 a.m. | 44°F | 35°F | 72% | 4.7 mph | 59% |
| noon | 50°F | 36°F | 58% | 5.8 mph | 61% |
| 3 p.m. | 53°F | 36°F | 52% | 5.8 mph | 57% |
| 6 p.m. | 48°F | 36°F | 63% | 5.1 mph | – |
| 9 p.m. | 45°F | 35°F | 69% | 4.7 mph | 65% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024149. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for October in Lewiston?
The warmest October temperature on Lewiston's official record (since 1881) is 94°F, on October 5, 1943; the coldest is 15°F, on October 31, 2002. The wettest October brought 3.24 in (1940); the snowiest, 2.5 inches (1971).
The October mean against the 1991-2020 normal of 52.5°F: 2021 54.1°F (+1.6), 2022 57.6°F (+5.1), 2023 55.5°F (+3.0), 2024 55.8°F (+3.3), 2025 53.4°F (+0.9). 5 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 54.1°F | +1.6°F | 0.76 in |
| 2022 | 57.6°F | +5.1°F | 1.36 in |
| 2023 | 55.5°F | +3.0°F | 1.43 in |
| 2024 | 55.8°F | +3.3°F | 0.89 in |
| 2025 | 53.4°F | +0.9°F | 0.63 in |
Source: records: ACIS, NWS threaded record LWSthr; recent months: ACIS, station USW00024149. Records and recent months use complete months only.
How does October in Lewiston compare across Idaho?
Across the 85 places PlainClimate covers in Idaho, October normal highs run from 44°F in Mullan to 71°F in Glenns Ferry; Lewiston's is 63°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.