Posey County climate

Posey County Weather in May

NOAA 1991-2020 normals for Mt Vernon, 10.7 km from Posey County

Average highs run from 73°F on May 1 to 81°F on May 31, and lows from 49°F to 60°F. Normal precipitation for the month is 4.98 in over about 11 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 Posey County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
77°F
Average low
54°F
Precipitation
4.98 in
Record high
97°FMay 27, 2012
Record low
31°FMay 1, 1963
Chance of a freeze
4%
Days of 90°F or more
0.8
Daylight
13 h 48 min to 14 h 37 min
Cloud cover
64%
Humidity
79%
Dew point
59°F
Wind
9.4 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 173°F49°F91°F 189531°F 196338%0%
May 273°F50°F91°F 195233°F 199438%0%
May 373°F50°F90°F 189934°F 197138%0%
May 473°F50°F91°F 189533°F 195438%0%
May 574°F51°F95°F 189534°F 194037%0%
May 674°F51°F91°F 194035°F 196837%0%
May 774°F51°F92°F 201232°F 194437%0%
May 874°F52°F95°F 189639°F 194737%0%
May 975°F52°F94°F 189633°F 194737%0%
May 1075°F52°F96°F 189633°F 194737%0%
May 1175°F53°F91°F 190236°F 194537%0%
May 1276°F53°F93°F 190236°F 198936%0%
May 1376°F53°F92°F 190238°F 196036%0%
May 1476°F54°F90°F 190038°F 199636%0%
May 1576°F54°F93°F 201838°F 197336%0%
May 1677°F54°F92°F 189936°F 199736%0%
May 1777°F55°F93°F 196240°F 197335%0%
May 1877°F55°F94°F 190240°F 194135%0%
May 1978°F55°F96°F 189637°F 200235%0%
May 2078°F56°F96°F 190239°F 200234%0%
May 2178°F56°F95°F 194139°F 195434%0%
May 2278°F57°F94°F 190240°F 200234%0%
May 2379°F57°F92°F 193938°F 196334%0%
May 2479°F57°F93°F 201042°F 193134%0%
May 2579°F58°F93°F 201242°F 193433%0%
May 2680°F58°F95°F 195340°F 197933%0%
May 2780°F58°F97°F 201234°F 196133%0%
May 2880°F59°F97°F 201241°F 190233%0%
May 2981°F59°F97°F 201243°F 196532%0%
May 3081°F59°F95°F 193737°F 194732%0%
May 3181°F60°F97°F 193444°F 189432%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Posey County, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

May 1
sunrise 5:55 AM, sunset 7:43 PM
May 31
sunrise 5:31 AM, sunset 8:08 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00126001 (Mt Vernon), public domain. Records: NOAA GHCN-Daily, station USC00153762, 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.