Cortland climate

Cortland Weather in May

NOAA 1991-2020 normals for Freeville 1 Ne, 15.4 km from Cortland

Average highs run from 61°F on May 1 to 71°F on May 31, and lows from 39°F to 48°F. Normal precipitation for the month is 3.51 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 Cortland, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
66°F
Average low
44°F
Precipitation
3.51 in
Record high
92°FMay 19, 2026
Record low
22°FMay 13, 2020
Chance of a freeze
68%
Daylight
14 h 06 min to 15 h 05 min
Cloud cover
68%
Humidity
78%
Dew point
48°F
Wind
4.9 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 161°F39°F77°F 202426°F 201842%
May 261°F39°F77°F 201833°F 202142%
May 362°F40°F85°F 201836°F 201542%
May 462°F40°F80°F 201230°F 201742%
May 563°F40°F80°F 201530°F 202043%
May 663°F41°F75°F 201328°F 202043%
May 763°F41°F75°F 201325°F 202043%
May 864°F41°F79°F 201527°F 202043%
May 964°F42°F87°F 201525°F 202043%
May 1064°F42°F83°F 201527°F 202043%
May 1165°F42°F86°F 201530°F 202143%
May 1265°F43°F83°F 201530°F 202043%
May 1366°F43°F86°F 202222°F 202043%
May 1466°F43°F84°F 201424°F 201343%
May 1566°F44°F80°F 201431°F 202343%
May 1667°F44°F80°F 202032°F 201643%
May 1767°F44°F81°F 202533°F 201243%
May 1867°F44°F87°F 201726°F 202343%
May 1967°F45°F92°F 202630°F 201643%0%
May 2068°F45°F86°F 201932°F 201443%0%
May 2168°F45°F87°F 202134°F 202043%0%
May 2268°F46°F89°F 202234°F 201943%0%
May 2369°F46°F85°F 201328°F 201543%0%
May 2469°F46°F79°F 202036°F 201543%0%
May 2569°F46°F80°F 202432°F 202343%0%
May 2669°F47°F83°F 201531°F 202343%0%
May 2770°F47°F89°F 202030°F 201343%0%
May 2870°F47°F85°F 201643°F 201343%0%
May 2970°F48°F89°F 201643°F 202143%0%
May 3070°F48°F88°F 202335°F 202442%0%
May 3171°F48°F86°F 202235°F 202442%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cortland, 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 5:59 AM, sunset 8:05 PM
May 31
sunrise 5:30 AM, sunset 8:35 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00303050 (Freeville 1 Ne), public domain. Records: NOAA GHCN-Daily, station USC00303050, 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.