Charlestown, Massachusetts, United States Climate

Weather: 7.89°C/46.2°F, Wind SW at 0.89 km/h, 91% Humidity, 1.57% Chance of rain

United States
(Photo by Andrea Davis on Unsplash)

Charlestown Climate Summary

Located at an elevation of None meters (0 feet) above sea level, Charlestown has a Humid continental, no dry season, hot summer climate (Classification: Dfa). The district’s yearly temperature is 12.79ºC (55.02ºF) and it is 0.15% higher than United States’s averages. Charlestown typically receives about 36.1 millimeters (1.42 inches) of precipitation and has 38.27 rainy days (10.48% of the time) annually.

CountryUnited States
CityMassachusetts
Longitude-71.0602131
Latitude42.3782065
Attitude/ElevationNonem (0ft)
Local timeThursday 11:25
Annual high temperature15.41ºC (59.74ºF)
Annual low temperature8.3ºC (46.94ºF)
Average annual precip.36.1mm (1.42in)
Warmest monthJuly (30.42ºC / 86.76ºF)
Coldest MonthJanuary (-3.94ºC / 24.91ºF)
Wettest MonthDecember (53.39mm / 2.1in)
Driest MonthSeptember (19.35mm / 0.76in)
Number of days with rainfall (≥ 1.0 mm)38.27 days (10.48%)
Days with no rain326.73 days (89.52%)
Humidity65.34%

Climate Charlestown: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)18.0(64.4)20.0(68.0)19.0(66.2)23.0(73.4)33.0(91.4)35.0(95.0)40.0(104.0)38.0(100.4)36.0(96.8)29.0(84.2)22.0(71.6)17.0(62.6)40.0(104.0)
Average high °C (°F)2.28(36.1)4.54(40.17)6.7(44.06)12.09(53.76)19.77(67.59)25.46(77.83)30.42(86.76)28.78(83.8)24.07(75.33)16.69(62.04)9.63(49.33)4.54(40.17)15.41(59.74)
Daily mean °C (°F)-0.01(31.98)2.16(35.89)4.2(39.56)9.49(49.08)16.77(62.19)22.56(72.61)27.34(81.21)25.91(78.64)21.14(70.05)14.2(57.56)7.23(45.01)2.47(36.45)12.79(55.02)
Average low °C (°F)-3.94(24.91)-1.79(28.78)0.19(32.34)4.91(40.84)11.16(52.09)16.98(62.56)21.71(71.08)20.97(69.75)16.78(62.2)10.19(50.34)3.46(38.23)-0.98(30.24)8.3(46.94)
Record low °C (°F)-20.0(-4.0)-12.0(10.4)-12.0(10.4)-2.0(28.4)3.0(37.4)10.0(50.0)17.0(62.6)12.0(53.6)7.0(44.6)-2.0(28.4)-10.0(14.0)-11.0(12.2)-20.0(-4.0)
Average precipitation mm (inches)37.89(1.49)32.88(1.29)45.07(1.77)45.45(1.79)28.27(1.11)24.75(0.97)31.78(1.25)26.08(1.03)19.35(0.76)42.65(1.68)45.63(1.8)53.39(2.1)36.1(1.42)
Average precipitation days (≥ 1.0 mm)2.553.453.184.04.02.913.643.092.273.093.362.733.19
Average relative humidity (%)67.2267.1167.8162.8663.1861.962.163.4364.767.5665.9270.2365.34
Mean monthly sunshine hours6.78.468.710.212.513.2113.5412.4510.337.856.556.599.76

Climate Graph

The chart below shows the mean monthly temperature and precipitation of Charlestown in recent years.

Charlestown

Charlestown Temperature by Month

July
27.34°C | 81.21°F
August
25.91°C | 78.64°F
June
22.56°C | 72.61°F
September
21.14°C | 70.05°F
May
16.77°C | 62.19°F
October
14.2°C | 57.56°F
April
9.49°C | 49.08°F
November
7.23°C | 45.01°F
March
4.2°C | 39.56°F
December
2.47°C | 36.45°F
February
2.16°C | 35.89°F
January
-0.01°C | 31.98°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature35.0°C (95.0°F)27.71°C (81.88°F)17.0°C (62.6°F)
Avg Temperature31.0°C (87.8°F)25.06°C (77.11°F)17.0°C (62.6°F)
Min Temperature25.0°C (77.0°F)20.87°C (69.57°F)12.0°C (53.6°F)
Dew PointMaxAverageMin
Dew Point20.0°C (68.0°F)15.77°C (60.39°F)5.0°C (41.0°F)
PrecipitationMaxAverageMinSum
Precipitation33.5mm | 1.32in3.43mm | 0.14in0.0mm | 0in106.4mm | 4.19in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind20.0kmh | 12.43mph11.77kmh | 7.31mph4.0kmh | 2.49mph
Gust Wind32.0kmh | 19.88mph15.9kmh | 9.88mph5.0kmh | 3.11mph
Sea Level PressureMaxAverageMin
Sea Level Pressure33.5mb3.43mb0.0mb
Charlestown

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
August° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2020-08-0126 | 78.818 | 64.46310 | 6.2129.88 | 10120.0 | 0.0
2020-08-0228 | 82.419 | 66.26413 | 8.0830.0 | 10160.0 | 0.0
2020-08-0330 | 86.019 | 66.26016 | 9.9429.94 | 10140.4 | 0.02
2020-08-0426 | 78.819 | 66.26919 | 11.8129.97 | 101516.0 | 0.63
2020-08-0528 | 82.419 | 66.26219 | 11.8129.91 | 10131.4 | 0.06
2020-08-0628 | 82.414 | 57.2468 | 4.9730.09 | 10190.0 | 0.0
2020-08-0722 | 71.616 | 60.87010 | 6.2130.15 | 10212.0 | 0.08
2020-08-0822 | 71.619 | 66.2878 | 4.9730.12 | 102017.4 | 0.69
2020-08-0927 | 80.617 | 62.6639 | 5.5930.06 | 10180.4 | 0.02
2020-08-1028 | 82.419 | 66.26610 | 6.2129.94 | 10140.9 | 0.04
2020-08-1131 | 87.819 | 66.25814 | 8.729.94 | 10140.5 | 0.02
2020-08-1229 | 84.220 | 68.06314 | 8.730.0 | 10160.7 | 0.03
2020-08-1328 | 82.413 | 55.4438 | 4.9730.06 | 10180.1 | 0.0
2020-08-1425 | 77.016 | 60.8589 | 5.5930.06 | 10180.0 | 0.0
2020-08-1521 | 69.816 | 60.87517 | 10.5630.06 | 10180.0 | 0.0
2020-08-1621 | 69.817 | 62.67914 | 8.730.03 | 10172.0 | 0.08
2020-08-1719 | 66.216 | 60.88214 | 8.729.88 | 10128.9 | 0.35
2020-08-1825 | 77.015 | 59.06111 | 6.8429.83 | 10103.5 | 0.14
2020-08-1924 | 75.211 | 51.84810 | 6.2129.88 | 10120.0 | 0.0
2020-08-2024 | 75.211 | 51.8478 | 4.9730.0 | 10160.0 | 0.0
2020-08-2126 | 78.812 | 53.64913 | 8.0829.97 | 10150.0 | 0.0
2020-08-2227 | 80.617 | 62.66010 | 6.2129.91 | 10131.1 | 0.04
2020-08-2329 | 84.218 | 64.4609 | 5.5929.97 | 10150.1 | 0.0
2020-08-2428 | 82.419 | 66.2639 | 5.5929.94 | 10141.0 | 0.04
2020-08-2528 | 82.418 | 64.46113 | 8.0829.74 | 10072.6 | 0.1
2020-08-2619 | 66.25 | 41.03920 | 12.4329.83 | 10100.0 | 0.0
2020-08-2717 | 62.610 | 50.06410 | 6.2129.8 | 100913.9 | 0.55
2020-08-2824 | 75.217 | 62.6734 | 2.4929.74 | 10070.0 | 0.0
2020-08-2924 | 75.220 | 68.0839 | 5.5929.62 | 100333.5 | 1.32
2020-08-3022 | 71.612 | 53.65518 | 11.1829.62 | 10030.0 | 0.0
2020-08-3121 | 69.88 | 46.4479 | 5.5930.03 | 10170.0 | 0.0

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