Lake County climate

Lake County Weather in May

NOAA 1991-2020 normals for Portageville, 20.5 km from Lake County

Average highs run from 73°F on May 1 to 82°F on May 31, and lows from 55°F to 64°F. Normal precipitation for the month is 5.51 in over about 12 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 Lake County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
78°F
Average low
60°F
Precipitation
5.51 in
Record high
99°FMay 28, 1911
Record low
35°FMay 2, 1909
Chance of a freeze
0%
Days of 90°F or more
1.5
Daylight
13 h 41 min to 14 h 28 min
Cloud cover
60%
Humidity
79%
Dew point
61°F
Wind
9.8 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°F55°F88°F 189938°F 191838%0%
May 273°F55°F86°F 201235°F 190938%0%
May 374°F56°F88°F 201241°F 192138%0%
May 474°F56°F87°F 191538°F 201138%0%
May 574°F56°F89°F 191237°F 201338%0%
May 675°F57°F88°F 190442°F 190338%0%
May 775°F57°F88°F 201241°F 190638%0%
May 875°F57°F87°F 191244°F 190638%0%
May 975°F58°F86°F 191235°F 202038%0%
May 1076°F58°F87°F 191140°F 202038%0%
May 1176°F58°F89°F 191639°F 202038%0%
May 1276°F59°F87°F 191441°F 201338%0%
May 1377°F59°F89°F 191139°F 201338%0%
May 1477°F59°F92°F 191642°F 201937%0%
May 1577°F60°F92°F 191540°F 190437%0%
May 1678°F60°F91°F 189945°F 201437%0%
May 1778°F60°F90°F 189941°F 201137%0%
May 1878°F61°F92°F 190642°F 201137%0%
May 1978°F61°F95°F 191148°F 191636%0%
May 2079°F61°F90°F 191149°F 201636%0%
May 2179°F62°F90°F 190848°F 191936%0%
May 2279°F62°F90°F 192150°F 191936%0%
May 2380°F62°F92°F 190849°F 201235%0%
May 2480°F62°F94°F 190850°F 201335%0%
May 2580°F63°F94°F 191148°F 201335%0%
May 2681°F63°F95°F 191152°F 191035%0%
May 2781°F63°F97°F 191153°F 190735%0%
May 2881°F64°F99°F 191144°F 190734%0%
May 2981°F64°F98°F 191137°F 190734%0%
May 3082°F64°F99°F 191155°F 191234%0%
May 3182°F64°F97°F 191155°F 191234%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Lake 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 6:05 AM, sunset 7:46 PM
May 31
sunrise 5:42 AM, sunset 8:10 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00236804 (Portageville), public domain. Records: NOAA GHCN-Daily, station USC00402680, 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.