Lewis County climate

Lewis County Weather in May

NOAA 1991-2020 normals for Nezperce, 14.1 km from Lewis County

Average highs run from 59°F on May 1 to 65°F on May 31, and lows from 35°F to 42°F. Normal precipitation for the month is 2.70 in over about 11 wet days.

May day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Lewis County, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
62°F
Average low
39°F
Precipitation
2.70 in
Record high
96°FMay 25, 1928
Record low
19°FMay 1, 1954
Chance of a freeze
94%
Daylight
14 h 23 min to 15 h 31 min
Cloud cover
62%
Humidity
68%
Dew point
40°F
Wind
5.1 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.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
May 159°F35°F81°F 199819°F 195437%1%
May 259°F36°F81°F 202521°F 195437%1%
May 359°F36°F83°F 196626°F 196537%1%
May 460°F36°F85°F 196627°F 195937%1%
May 560°F36°F88°F 196625°F 198236%1%
May 660°F37°F85°F 199226°F 195936%1%
May 760°F37°F87°F 198722°F 201036%1%
May 861°F37°F85°F 198726°F 199936%1%
May 961°F37°F86°F 190627°F 199036%1%
May 1061°F38°F85°F 194029°F 194336%1%
May 1162°F38°F88°F 199325°F 197336%1%
May 1262°F38°F91°F 199320°F 195636%1%
May 1362°F38°F89°F 193128°F 198536%0%
May 1462°F39°F87°F 197326°F 197036%0%
May 1563°F39°F90°F 193929°F 194337%0%
May 1663°F39°F85°F 197021°F 197437%0%
May 1763°F39°F84°F 197325°F 197437%0%
May 1863°F39°F88°F 195425°F 196537%0%
May 1963°F40°F85°F 199326°F 197437%0%
May 2064°F40°F84°F 195828°F 193137%0%
May 2164°F40°F92°F 192828°F 197337%0%
May 2264°F40°F88°F 198825°F 196037%0%
May 2364°F40°F90°F 200127°F 196437%0%
May 2464°F41°F93°F 193428°F 197537%0%
May 2564°F41°F96°F 192828°F 198437%0%
May 2665°F41°F90°F 192828°F 196737%0%
May 2765°F41°F89°F 193429°F 197336%0%
May 2865°F41°F91°F 193430°F 197736%0%
May 2965°F42°F90°F 198628°F 197736%0%
May 3065°F42°F90°F 198631°F 197936%0%
May 3165°F42°F92°F 202531°F 195136%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Lewis County, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

May 1
sunrise 5:32 AM, sunset 7:55 PM
May 31
sunrise 4:58 AM, sunset 8:29 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00106424 (Nezperce), public domain. Records: NOAA GHCN-Daily, station USC00103771, 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.