Wilton climate

Wilton Weather in May

NOAA 1991-2020 normals for Wilton, 0.5 km from Wilton

Average highs run from 59°F on May 1 to 70°F on May 31, and lows from 36°F to 48°F.

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
65°F
Average low
42°F
Snowfall
0.9 in
Record high
95°FMay 12, 2025
Record low
22°FMay 3, 2013
Chance of a freeze
88%
Daylight
14 h 27 min to 15 h 38 min
Cloud cover
63%
Humidity
60%
Dew point
40°F
Wind
11.9 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°F36°F76°F 202029°F 20172%
May 260°F36°F82°F 202125°F 20262%
May 360°F37°F85°F 201522°F 20132%
May 461°F37°F82°F 202324°F 20132%
May 561°F38°F81°F 201622°F 20212%
May 661°F38°F89°F 201627°F 20132%
May 762°F39°F84°F 201727°F 20262%
May 862°F39°F90°F 201724°F 20262%
May 963°F39°F83°F 202523°F 20202%
May 1063°F40°F86°F 201227°F 20142%
May 1164°F40°F89°F 202527°F 20202%
May 1264°F41°F95°F 202523°F 20202%
May 1364°F41°F95°F 202525°F 20131%
May 1465°F42°F91°F 201333°F 20141%
May 1565°F42°F80°F 201830°F 20141%
May 1665°F42°F85°F 201924°F 20141%
May 1766°F43°F87°F 201236°F 20251%
May 1866°F43°F85°F 202431°F 20141%
May 1966°F44°F79°F 202132°F 20151%
May 2067°F44°F84°F 202126°F 20151%
May 2167°F44°F84°F 202130°F 20151%
May 2267°F45°F83°F 201236°F 20251%
May 2368°F45°F87°F 201435°F 20221%
May 2468°F46°F89°F 202338°F 20121%
May 2568°F46°F84°F 201835°F 20121%
May 2668°F46°F91°F 202639°F 20241%
May 2769°F47°F92°F 202640°F 20161%
May 2869°F47°F91°F 202635°F 20211%
May 2969°F47°F88°F 201430°F 20211%
May 3069°F48°F90°F 201434°F 20121%
May 3170°F48°F87°F 201931°F 20121%

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.00.511.521102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

May 1
sunrise 6:27 AM, sunset 8:54 PM
May 31
sunrise 5:52 AM, sunset 9:30 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00329455 (Wilton), public domain. Records: NOAA GHCN-Daily, station USC00320818, 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.