Chester climate

Chester Weather in May

NOAA 1991-2020 normals for Montgomery Orange AP, 16.3 km from Chester

Average highs run from 66°F on May 1 to 75°F on May 31, and lows from 41°F to 52°F. Normal precipitation for the month is 3.35 in over about 14 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 Chester, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
71°F
Average low
47°F
Precipitation
3.35 in
Record high
94°FMay 19, 2026
Record low
26°FMay 1, 2008
Chance of a freeze
52%
Days of 90°F or more
0.7
Daylight
14 h 01 min to 14 h 57 min
Cloud cover
66%
Humidity
79%
Dew point
50°F
Wind
4.3 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 166°F41°F88°F 201026°F 200842%0%
May 267°F42°F90°F 201831°F 200543%0%
May 367°F42°F92°F 201831°F 200543%0%
May 467°F42°F90°F 200132°F 200343%0%
May 568°F43°F83°F 200030°F 200543%0%
May 668°F43°F89°F 200032°F 201143%0%
May 768°F44°F90°F 200030°F 200643%0%
May 868°F44°F89°F 200031°F 200144%0%
May 969°F44°F93°F 200031°F 202044%0%
May 1069°F45°F87°F 201528°F 202044%0%
May 1169°F45°F88°F 201529°F 201044%0%
May 1270°F45°F86°F 201535°F 201044%0%
May 1370°F46°F86°F 200429°F 202045%0%
May 1470°F46°F81°F 201028°F 202045%0%
May 1570°F46°F88°F 201833°F 201345%0%
May 1671°F47°F85°F 199835°F 200045%0%
May 1771°F47°F93°F 201733°F 202345%0%
May 1871°F47°F93°F 201728°F 202345%0%
May 1971°F48°F94°F 202631°F 200245%0%
May 2072°F48°F88°F 202629°F 200246%0%
May 2172°F48°F89°F 202231°F 202046%0%
May 2272°F49°F87°F 202232°F 200246%0%
May 2372°F49°F87°F 200435°F 200246%0%
May 2473°F49°F86°F 200737°F 201546%0%
May 2573°F50°F90°F 200738°F 200646%0%
May 2673°F50°F94°F 201036°F 202346%0%
May 2774°F50°F88°F 201637°F 202346%0%
May 2874°F51°F92°F 201642°F 200046%0%
May 2974°F51°F91°F 200638°F 200846%0%
May 3074°F51°F90°F 201335°F 200446%0%
May 3175°F52°F92°F 201337°F 202646%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Chester, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

May 1
sunrise 5:54 AM, sunset 7:55 PM
May 31
sunrise 5:27 AM, sunset 8:24 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00004789 (Montgomery Orange AP), public domain. Records: NOAA GHCN-Daily, station USW00004789, 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.