Mountain Road climate

Mountain Road Weather in May

NOAA 1991-2020 normals for S Boston, 11.9 km from Mountain Road

Average highs run from 76°F on May 1 to 82°F on May 31, and lows from 49°F to 58°F. Normal precipitation for the month is 4.35 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 Mountain Road, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
79°F
Average low
53°F
Precipitation
4.35 in
Record high
98°FMay 27, 1989
Record low
28°FMay 5, 1986
Chance of a freeze
10%
Days of 90°F or more
1.6
Daylight
13 h 43 min to 14 h 30 min
Cloud cover
62%
Humidity
76%
Dew point
57°F
Wind
4.5 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 176°F49°F88°F 202530°F 198235%0%
May 276°F49°F91°F 198634°F 198235%0%
May 376°F49°F90°F 201030°F 198135%0%
May 476°F50°F89°F 201829°F 198635%0%
May 577°F50°F89°F 201828°F 198635%0%
May 677°F50°F89°F 198035°F 198235%0%
May 777°F51°F91°F 200036°F 200535%0%
May 877°F51°F93°F 198631°F 198135%0%
May 977°F51°F91°F 198631°F 202035%0%
May 1077°F52°F89°F 200029°F 202035%0%
May 1178°F52°F88°F 199329°F 202035%0%
May 1278°F52°F96°F 198734°F 198035%0%
May 1378°F53°F92°F 198035°F 198035%0%
May 1478°F53°F92°F 201835°F 198035%0%
May 1578°F53°F94°F 201837°F 198035%0%
May 1679°F53°F90°F 201837°F 198435%0%
May 1779°F54°F90°F 198235°F 198435%0%
May 1879°F54°F94°F 202637°F 198335%0%
May 1979°F54°F95°F 202636°F 200935%0%
May 2079°F55°F96°F 202638°F 200235%0%
May 2180°F55°F96°F 202638°F 200235%0%
May 2280°F55°F94°F 199636°F 200235%0%
May 2380°F56°F90°F 198435°F 200235%0%
May 2480°F56°F91°F 199236°F 200235%0%
May 2581°F56°F94°F 201940°F 200635%0%
May 2681°F57°F92°F 201935°F 198835%0%
May 2781°F57°F98°F 198929°F 198835%0%
May 2881°F57°F91°F 201040°F 198835%0%
May 2982°F58°F95°F 201941°F 199435%0%
May 3082°F58°F95°F 201940°F 198835%0%
May 3182°F58°F96°F 199142°F 199435%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Mountain Road, 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 6:22 AM, sunset 8:05 PM
May 31
sunrise 5:59 AM, sunset 8:29 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00447925 (S Boston), public domain. Records: NOAA GHCN-Daily, station USC00447925, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.