Lewiston Weather in July
Average highs run from 92°F on July 1 to 97°F on July 31, and lows from 52°F to 55°F. Normal precipitation for the month is 0.19 in over about 1 wet days.
July day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
July at a glance
- Average high
- 96°F
- Average low
- 54°F
- Precipitation
- 0.19 in
- Record high
- 113°FJul 11, 2002
- Record low
- 32°FJul 5, 1955
- Chance of a freeze
- 0%
- Days of 90°F or more
- 23.9
- Daylight
- 15 h 02 min to 14 h 20 min
- Cloud cover
- 17%
- Humidity
- 41%
- Dew point
- 41°F
- Wind
- 3.6 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 |
|---|---|---|---|---|---|---|
| Jul 1 | 92°F | 52°F | 108°F 2015 | 34°F 1955 | 6% | 0% |
| Jul 2 | 93°F | 52°F | 106°F 1922 | 36°F 1961 | 6% | 0% |
| Jul 3 | 93°F | 52°F | 107°F 1991 | 34°F 1948 | 6% | 0% |
| Jul 4 | 93°F | 52°F | 110°F 1984 | 35°F 1921 | 5% | 0% |
| Jul 5 | 94°F | 53°F | 110°F 1991 | 32°F 1955 | 5% | 0% |
| Jul 6 | 94°F | 53°F | 108°F 1932 | 32°F 1955 | 5% | 0% |
| Jul 7 | 94°F | 53°F | 107°F 2014 | 35°F 1955 | 5% | 0% |
| Jul 8 | 95°F | 53°F | 106°F 1919 | 37°F 1981 | 5% | 0% |
| Jul 9 | 95°F | 53°F | 108°F 1939 | 38°F 1983 | 5% | 0% |
| Jul 10 | 95°F | 54°F | 112°F 2002 | 37°F 1971 | 5% | 0% |
| Jul 11 | 95°F | 54°F | 113°F 2002 | 39°F 1971 | 4% | 0% |
| Jul 12 | 96°F | 54°F | 109°F 1990 | 38°F 1920 | 4% | 0% |
| Jul 13 | 96°F | 54°F | 110°F 1999 | 40°F 1943 | 4% | 0% |
| Jul 14 | 96°F | 54°F | 110°F 1987 | 41°F 1925 | 4% | 0% |
| Jul 15 | 96°F | 54°F | 112°F 1987 | 36°F 1924 | 4% | 0% |
| Jul 16 | 96°F | 55°F | 110°F 1972 | 40°F 1923 | 4% | 0% |
| Jul 17 | 96°F | 55°F | 110°F 1984 | 35°F 1955 | 4% | 0% |
| Jul 18 | 97°F | 55°F | 108°F 1925 | 38°F 1955 | 4% | 0% |
| Jul 19 | 97°F | 55°F | 109°F 1931 | 41°F 1949 | 4% | 0% |
| Jul 20 | 97°F | 55°F | 111°F 1988 | 39°F 1918 | 4% | 0% |
| Jul 21 | 97°F | 55°F | 112°F 1988 | 36°F 1918 | 4% | 0% |
| Jul 22 | 97°F | 55°F | 112°F 1939 | 36°F 1918 | 4% | 0% |
| Jul 23 | 97°F | 55°F | 112°F 1939 | 32°F 1918 | 3% | 0% |
| Jul 24 | 97°F | 55°F | 109°F 1988 | 41°F 1918 | 3% | 0% |
| Jul 25 | 97°F | 55°F | 109°F 1931 | 36°F 1955 | 3% | 0% |
| Jul 26 | 97°F | 55°F | 109°F 1985 | 40°F 1918 | 3% | 0% |
| Jul 27 | 97°F | 55°F | 108°F 1985 | 38°F 1929 | 3% | 0% |
| Jul 28 | 97°F | 55°F | 109°F 1923 | 40°F 1918 | 3% | 0% |
| Jul 29 | 97°F | 55°F | 110°F 1923 | 35°F 1995 | 3% | 0% |
| Jul 30 | 97°F | 55°F | 111°F 2003 | 38°F 1924 | 3% | 0% |
| Jul 31 | 97°F | 55°F | 111°F 2003 | 38°F 1924 | 3% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- July 1
- sunrise 5:44 AM, sunset 8:46 PM
- July 31
- sunrise 6:07 AM, sunset 8:27 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.