Marathon climate

Marathon Weather in May

NOAA 1991-2020 normals for Whitney Pt Dam, 12.4 km from Marathon

Average highs run from 63°F on May 1 to 72°F on May 31, and lows from 39°F to 49°F. Normal precipitation for the month is 3.51 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 Marathon, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
68°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
61%
Daylight
14 h 05 min to 15 h 04 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 163°F39°F77°F 202426°F 2018
May 264°F39°F77°F 201833°F 2021
May 364°F39°F85°F 201836°F 2015
May 464°F40°F80°F 201230°F 2017
May 565°F40°F80°F 201530°F 2020
May 665°F40°F75°F 201328°F 2020
May 766°F41°F75°F 201325°F 2020
May 866°F41°F79°F 201527°F 2020
May 966°F41°F87°F 201525°F 2020
May 1067°F42°F83°F 201527°F 2020
May 1167°F42°F86°F 201530°F 2021
May 1267°F42°F83°F 201530°F 2020
May 1368°F43°F86°F 202222°F 2020
May 1468°F43°F84°F 201424°F 2013
May 1568°F43°F80°F 201431°F 2023
May 1668°F44°F80°F 202032°F 2016
May 1769°F44°F81°F 202533°F 2012
May 1869°F44°F87°F 201726°F 2023
May 1969°F45°F92°F 202630°F 20160%
May 2069°F45°F86°F 201932°F 20140%
May 2170°F45°F87°F 202134°F 20200%
May 2270°F46°F89°F 202234°F 20190%
May 2370°F46°F85°F 201328°F 20150%
May 2471°F46°F79°F 202036°F 20150%
May 2571°F47°F80°F 202432°F 20230%
May 2671°F47°F83°F 201531°F 20230%
May 2771°F47°F89°F 202030°F 20130%
May 2871°F48°F85°F 201643°F 20130%
May 2972°F48°F89°F 201643°F 20210%
May 3072°F48°F88°F 202335°F 20240%
May 3172°F49°F86°F 202235°F 20240%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Marathon, 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 5:59 AM, sunset 8:04 PM
May 31
sunrise 5:30 AM, sunset 8:34 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00309442 (Whitney Pt Dam), 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.