Chautauqua County climate

Chautauqua County Weather in May

NOAA 1991-2020 normals for Portland1 Sw, 10.1 km from Chautauqua County

Average highs run from 63°F on May 1 to 73°F on May 31, and lows from 43°F to 54°F. Normal precipitation for the month is 3.69 in.

May day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Chautauqua County, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
68°F
Average low
49°F
Precipitation
3.69 in
Record high
91°FMay 17, 1991
Record low
19°FMay 1, 1987
Chance of a freeze
35%
Daylight
14 h 04 min to 15 h 03 min
Cloud cover
76%
Humidity
79%
Dew point
47°F
Wind
7.2 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 163°F43°F82°F 196219°F 1987
May 263°F43°F85°F 200120°F 1984
May 364°F44°F84°F 200125°F 1978
May 464°F44°F85°F 201221°F 1987
May 564°F44°F84°F 200119°F 1986
May 665°F45°F85°F 199921°F 1987
May 765°F45°F85°F 198224°F 1989
May 865°F45°F83°F 197922°F 19870%
May 966°F46°F87°F 197923°F 19850%
May 1066°F46°F88°F 197926°F 19830%
May 1167°F47°F86°F 199324°F 19870%
May 1267°F47°F87°F 197928°F 19740%
May 1367°F47°F88°F 199124°F 19870%
May 1468°F48°F88°F 199126°F 19870%
May 1568°F48°F89°F 198829°F 19770%
May 1668°F49°F88°F 199129°F 19840%
May 1769°F49°F91°F 199126°F 19840%
May 1869°F49°F89°F 199626°F 19830%
May 1969°F50°F90°F 199627°F 20090%
May 2070°F50°F90°F 199625°F 19850%
May 2170°F51°F89°F 202130°F 20020%
May 2270°F51°F89°F 202130°F 19850%
May 2371°F51°F86°F 197529°F 20150%
May 2471°F52°F89°F 199129°F 20150%
May 2571°F52°F87°F 199133°F 19760%
May 2672°F53°F91°F 202032°F 20130%
May 2772°F53°F91°F 202033°F 19740%
May 2872°F53°F89°F 197831°F 19890%
May 2973°F54°F89°F 201229°F 19850%
May 3073°F54°F90°F 200630°F 19960%
May 3173°F54°F91°F 200632°F 19960%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Chautauqua County, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

May 1
sunrise 6:13 AM, sunset 8:17 PM
May 31
sunrise 5:44 AM, sunset 8:47 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00306747 (Portland1 Sw), public domain. Records: NOAA GHCN-Daily, station USC00304207, 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.