Salem climate

Salem Weather in May

NOAA 1991-2020 normals for Wilmington New Castle CO AP, 16 km from Salem

Average highs run from 70°F on May 1 to 78°F on May 31, and lows from 49°F to 58°F. Normal precipitation for the month is 3.57 in over about 12 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 Salem, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
74°F
Average low
53°F
Precipitation
3.57 in
Record high
96°FMay 19, 2026
Record low
30°FMay 1, 1978
Chance of a freeze
2%
Days of 90°F or more
1.1
Daylight
13 h 53 min to 14 h 46 min
Cloud cover
62%
Humidity
79%
Dew point
55°F
Wind
8.5 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 170°F49°F90°F 194230°F 197838%0%
May 270°F49°F88°F 201835°F 196038%0%
May 370°F49°F90°F 201833°F 200538%0%
May 471°F50°F88°F 196534°F 193138%0%
May 571°F50°F88°F 195535°F 193139%0%
May 671°F50°F89°F 194940°F 195439%0%
May 771°F51°F91°F 200033°F 197039%0%
May 872°F51°F90°F 200034°F 199739%0%
May 972°F51°F92°F 196333°F 202039%0%
May 1072°F52°F91°F 197033°F 196639%0%
May 1172°F52°F90°F 194832°F 196639%0%
May 1273°F52°F90°F 195937°F 196239%0%
May 1373°F53°F89°F 199137°F 196739%0%
May 1473°F53°F93°F 195636°F 199639%0%
May 1573°F53°F88°F 196239°F 198439%0%
May 1674°F53°F89°F 195138°F 195939%0%
May 1774°F54°F92°F 197435°F 195639%0%
May 1874°F54°F94°F 196240°F 196738%0%
May 1974°F54°F96°F 202637°F 200938%0%
May 2075°F55°F96°F 199637°F 200238%0%
May 2175°F55°F95°F 199635°F 200238%0%
May 2275°F55°F92°F 202137°F 200238%0%
May 2375°F56°F94°F 202139°F 193238%0%
May 2476°F56°F90°F 195536°F 196338%0%
May 2576°F56°F92°F 199139°F 195638%0%
May 2676°F57°F92°F 201043°F 195637%0%
May 2776°F57°F93°F 196542°F 197237%0%
May 2877°F57°F91°F 199141°F 199737%0%
May 2977°F58°F93°F 195542°F 194937%0%
May 3077°F58°F95°F 201141°F 196137%0%
May 3178°F58°F96°F 201142°F 196137%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Salem, 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 (EDT).

May 1
sunrise 6:03 AM, sunset 7:56 PM
May 31
sunrise 5:37 AM, sunset 8:23 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00013781 (Wilmington New Castle CO AP), public domain. Records: NOAA GHCN-Daily, station USW00013781, 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.