Lewiston Weather in October
Average highs run from 84°F on October 1 to 67°F on October 31, and lows from 42°F to 37°F. Normal precipitation for the month is 1.94 in over about 5 wet days.
October day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
October at a glance
- Average high
- 76°F
- Average low
- 39°F
- Precipitation
- 1.94 in
- Record high
- 104°FOct 3, 1980
- Record low
- 14°FOct 29, 1971
- Chance of a freeze
- 73%
- Days of 90°F or more
- 1.9
- Daylight
- 11 h 45 min to 10 h 27 min
- Cloud cover
- 34%
- Humidity
- 56%
- Dew point
- 34°F
- Wind
- 3.8 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Oct 1 | 84°F | 42°F | 100°F 1987 | 23°F 1950 | 10% | 0% |
| Oct 2 | 83°F | 41°F | 101°F 1980 | 25°F 1925 | 10% | 0% |
| Oct 3 | 83°F | 41°F | 104°F 1980 | 26°F 1953 | 11% | 0% |
| Oct 4 | 82°F | 41°F | 102°F 1933 | 25°F 1924 | 11% | 0% |
| Oct 5 | 82°F | 41°F | 100°F 1933 | 23°F 1913 | 12% | 0% |
| Oct 6 | 81°F | 40°F | 100°F 1933 | 23°F 1927 | 12% | 0% |
| Oct 7 | 81°F | 40°F | 98°F 1980 | 24°F 1927 | 12% | 0% |
| Oct 8 | 80°F | 40°F | 98°F 1996 | 20°F 1949 | 13% | 0% |
| Oct 9 | 80°F | 40°F | 99°F 1996 | 25°F 1924 | 13% | 0% |
| Oct 10 | 79°F | 39°F | 96°F 1933 | 20°F 1924 | 14% | 0% |
| Oct 11 | 79°F | 39°F | 98°F 1991 | 18°F 1924 | 14% | 0% |
| Oct 12 | 78°F | 39°F | 99°F 1991 | 17°F 1924 | 15% | 0% |
| Oct 13 | 78°F | 39°F | 99°F 1991 | 19°F 1924 | 15% | 0% |
| Oct 14 | 77°F | 39°F | 95°F 2015 | 20°F 1966 | 16% | 0% |
| Oct 15 | 76°F | 38°F | 97°F 1991 | 21°F 1919 | 16% | |
| Oct 16 | 76°F | 38°F | 93°F 1961 | 23°F 1971 | 17% | |
| Oct 17 | 75°F | 38°F | 90°F 1955 | 21°F 1938 | 18% | |
| Oct 18 | 75°F | 38°F | 90°F 1988 | 22°F 1971 | 18% | |
| Oct 19 | 74°F | 38°F | 92°F 1974 | 18°F 1949 | 19% | |
| Oct 20 | 73°F | 38°F | 92°F 1918 | 19°F 1949 | 19% | |
| Oct 21 | 73°F | 38°F | 90°F 1917 | 23°F 1949 | 20% | |
| Oct 22 | 72°F | 38°F | 90°F 1915 | 24°F 1956 | 21% | |
| Oct 23 | 72°F | 37°F | 93°F 1929 | 18°F 1923 | 21% | |
| Oct 24 | 71°F | 37°F | 92°F 1929 | 19°F 1954 | 22% | |
| Oct 25 | 71°F | 37°F | 92°F 1929 | 20°F 1919 | 23% | |
| Oct 26 | 70°F | 37°F | 89°F 2003 | 16°F 1919 | 23% | |
| Oct 27 | 69°F | 37°F | 91°F 2003 | 22°F 1972 | 24% | |
| Oct 28 | 69°F | 37°F | 91°F 2003 | 15°F 1971 | 25% | |
| Oct 29 | 68°F | 37°F | 90°F 2003 | 14°F 1971 | 25% | |
| Oct 30 | 68°F | 37°F | 86°F 1939 | 18°F 1972 | 26% | |
| Oct 31 | 67°F | 37°F | 83°F 1949 | 18°F 1955 | 27% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- October 1
- sunrise 7:08 AM, sunset 6:53 PM
- October 31
- sunrise 7:41 AM, sunset 6:08 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00049026 (Trinity Rvr Hatchery), public domain. Records: NOAA GHCN-Daily, station USC00049490, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.