Rocky Hill climate

Rocky Hill Weather in May

NOAA 1991-2020 normals for Wertsville 4 Ne, 13.6 km from Rocky Hill

Average highs run from 68°F on May 1 to 75°F on May 31, and lows from 45°F to 54°F. Normal precipitation for the month is 4.35 in over about 13 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 Rocky Hill, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
71°F
Average low
50°F
Precipitation
4.35 in
Record high
96°FMay 19, 2026
Record low
31°FMay 10, 2020
Chance of a freeze
11%
Days of 90°F or more
0.8
Daylight
13 h 56 min to 14 h 51 min
Cloud cover
65%
Humidity
79%
Dew point
52°F
Wind
6.3 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 168°F45°F91°F 201035°F 200041%0%
May 268°F46°F88°F 201037°F 200541%0%
May 368°F46°F91°F 201835°F 200541%0%
May 469°F46°F89°F 200134°F 200241%0%
May 569°F47°F86°F 200037°F 200341%0%
May 669°F47°F86°F 200040°F 201142%0%
May 769°F47°F90°F 200035°F 200142%0%
May 870°F48°F90°F 200036°F 202042%0%
May 970°F48°F89°F 200032°F 202042%0%
May 1070°F48°F84°F 201531°F 202042%0%
May 1170°F49°F86°F 200137°F 201042%0%
May 1270°F49°F87°F 200440°F 202642%0%
May 1371°F49°F87°F 200435°F 202042%0%
May 1471°F49°F82°F 201037°F 199842%0%
May 1571°F50°F88°F 200439°F 199942%0%
May 1671°F50°F87°F 199840°F 201643%0%
May 1772°F50°F91°F 201743°F 200343%0%
May 1872°F51°F94°F 202637°F 202343%0%
May 1972°F51°F96°F 202637°F 200243%0%
May 2072°F51°F93°F 202634°F 200243%0%
May 2173°F51°F92°F 202236°F 200243%0%
May 2273°F52°F89°F 202136°F 200243%0%
May 2373°F52°F90°F 200441°F 200243%0%
May 2473°F52°F90°F 200444°F 201342%0%
May 2574°F53°F88°F 200744°F 201342%0%
May 2674°F53°F91°F 201045°F 202342%0%
May 2774°F53°F90°F 201543°F 201342%0%
May 2874°F53°F90°F 201247°F 200842%0%
May 2975°F54°F91°F 201243°F 200842%0%
May 3075°F54°F91°F 201343°F 200442%0%
May 3175°F54°F92°F 201144°F 202642%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Rocky Hill, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

May 1
sunrise 5:58 AM, sunset 7:54 PM
May 31
sunrise 5:31 AM, sunset 8:22 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00289363 (Wertsville 4 Ne), public domain. Records: NOAA GHCN-Daily, station USW00014792, 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.