Marstons Mills climate

Marstons Mills Weather in May

NOAA 1991-2020 normals for Hyannis, 9.4 km from Marstons Mills

Average highs run from 59°F on May 1 to 67°F on May 31, and lows from 43°F to 52°F. Normal precipitation for the month is 3.42 in over about 10 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 Marstons Mills, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
63°F
Average low
48°F
Precipitation
3.42 in
Record high
88°FMay 19, 2017
Record low
31°FMay 6, 2020
Chance of a freeze
10%
Daylight
14 h 02 min to 14 h 59 min
Cloud cover
63%
Humidity
85%
Dew point
49°F
Wind
13.0 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 159°F43°F72°F 202532°F 201635%0%
May 259°F44°F65°F 202132°F 201135%0%
May 360°F44°F80°F 201835°F 201335%0%
May 460°F44°F83°F 201833°F 202635%0%
May 560°F45°F78°F 201838°F 201334%0%
May 660°F45°F73°F 201531°F 202034%0%
May 761°F45°F73°F 202333°F 201934%0%
May 861°F45°F84°F 201534°F 201434%0%
May 961°F46°F79°F 201531°F 201734%0%
May 1061°F46°F71°F 201531°F 201634%0%
May 1162°F46°F79°F 201331°F 201634%0%
May 1262°F47°F78°F 202335°F 202434%0%
May 1362°F47°F84°F 201434°F 201333%0%
May 1462°F47°F77°F 201234°F 202033%0%
May 1563°F47°F80°F 202233°F 201333%0%
May 1663°F48°F77°F 202133°F 201333%0%
May 1763°F48°F79°F 202139°F 202033%0%
May 1863°F48°F84°F 202631°F 202333%0%
May 1963°F48°F88°F 201738°F 202332%0%
May 2064°F49°F86°F 201741°F 202032%0%
May 2164°F49°F86°F 202633°F 202032%0%
May 2264°F49°F80°F 201338°F 201732%0%
May 2364°F50°F87°F 202239°F 202332%0%
May 2465°F50°F87°F 202136°F 202331%0%
May 2565°F50°F81°F 202439°F 202231%0%
May 2665°F50°F78°F 201641°F 201331%0%
May 2765°F51°F86°F 201842°F 202331%0%
May 2866°F51°F84°F 201140°F 201331%0%
May 2966°F51°F79°F 201142°F 201431%0%
May 3066°F52°F82°F 201235°F 201430%0%
May 3167°F52°F84°F 201341°F 202330%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Marstons Mills, 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 (EDT).

May 1
sunrise 5:38 AM, sunset 7:40 PM
May 31
sunrise 5:10 AM, sunset 8:09 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00193821 (Hyannis), public domain. Records: NOAA GHCN-Daily, station USC00192372, 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.