Wilton climate

Wilton Weather in May

NOAA 1991-2020 normals for Cashton, 21.5 km from Wilton

Average highs run from 64°F on May 1 to 73°F on May 31, and lows from 43°F to 54°F. Normal precipitation for the month is 4.44 in over about 13 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 Wilton, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
68°F
Average low
48°F
Precipitation
4.44 in
Snowfall
0.1 in
Record high
95°FMay 28, 2018
Record low
21°FMay 10, 1966
Chance of a freeze
38%
Daylight
14 h 11 min to 15 h 14 min
Cloud cover
66%
Humidity
76%
Dew point
48°F
Wind
10.5 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 164°F43°F90°F 195222°F 196340%3%
May 264°F43°F92°F 195924°F 197840%2%
May 364°F44°F88°F 194924°F 197140%2%
May 465°F44°F87°F 194924°F 197640%2%
May 565°F44°F90°F 194925°F 196841%2%
May 665°F45°F89°F 200024°F 198941%2%
May 766°F45°F90°F 201624°F 198941%1%
May 866°F46°F85°F 200025°F 194741%1%
May 966°F46°F84°F 195322°F 202041%1%
May 1067°F46°F85°F 195821°F 196641%1%
May 1167°F47°F87°F 197925°F 202141%1%
May 1267°F47°F88°F 194024°F 202041%1%
May 1368°F47°F93°F 202227°F 199641%1%
May 1468°F48°F88°F 199128°F 197341%1%
May 1568°F48°F91°F 200724°F 201641%0%
May 1668°F48°F91°F 200129°F 195641%0%
May 1769°F49°F89°F 196228°F 197341%0%
May 1869°F49°F90°F 196230°F 194541%0%
May 1969°F50°F90°F 197228°F 198141%0%
May 2070°F50°F91°F 194830°F 200241%0%
May 2170°F50°F92°F 197230°F 199741%0%
May 2270°F51°F91°F 197227°F 196741%0%
May 2370°F51°F91°F 197226°F 196342%0%
May 2471°F51°F90°F 197231°F 191742%0%
May 2571°F52°F92°F 193931°F 197942%0%
May 2671°F52°F92°F 196728°F 196142%0%
May 2772°F52°F93°F 201828°F 197142%0%
May 2872°F53°F95°F 201834°F 197142%0%
May 2972°F53°F95°F 201829°F 196541%0%
May 3072°F54°F93°F 200633°F 196541%0%
May 3173°F54°F92°F 193931°F 197241%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Wilton, 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 (CDT).

May 1
sunrise 5:54 AM, sunset 8:05 PM
May 31
sunrise 5:23 AM, sunset 8:37 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00471280 (Cashton), public domain. Records: NOAA GHCN-Daily, station USC00477997, 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.