Wellesley, Massachusetts, United States Climate

Weather: 10.24°C/50.43°F, Wind SW at 2.57 km/h, 92% Humidity, 0% Chance of rain

United States
(Photo by Blake Kelly on Unsplash)
Contents

Wellesley Climate Summary

Located at an elevation of None meters (0 feet) above sea level, Wellesley has a Humid continental, no dry season, hot summer climate (Classification: Dfa). The district’s yearly temperature is 12.53ºC (54.55ºF) and it is -0.11% lower than United States’s averages. Wellesley typically receives about 34.03 millimeters (1.34 inches) of precipitation and has 38.07 rainy days (10.43% of the time) annually.

CountryUnited States
CityMassachusetts
Longitude-71.2923877
Latitude42.296797
Attitude/ElevationNonem (0ft)
Local timeSaturday 17:23
Annual high temperature15.47ºC (59.85ºF)
Annual low temperature7.07ºC (44.73ºF)
Average annual precip.34.03mm (1.34in)
Warmest monthJuly (30.58ºC / 87.04ºF)
Coldest MonthJanuary (-4.6ºC / 23.72ºF)
Wettest MonthDecember (45.05mm / 1.77in)
Driest MonthSeptember (19.42mm / 0.76in)
Number of days with rainfall (≥ 1.0 mm)38.07 days (10.43%)
Days with no rain326.93 days (89.57%)
Humidity70.01%

Climate Wellesley: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)18.0(64.4)21.0(69.8)18.0(64.4)23.0(73.4)33.0(91.4)35.0(95.0)40.0(104.0)37.0(98.6)35.0(95.0)29.0(84.2)23.0(73.4)17.0(62.6)40.0(104.0)
Average high °C (°F)2.26(36.07)4.54(40.17)6.92(44.46)12.12(53.82)20.3(68.54)25.92(78.66)30.58(87.04)28.7(83.66)24.23(75.61)16.55(61.79)9.11(48.4)4.41(39.94)15.47(59.85)
Daily mean °C (°F)-0.23(31.59)1.96(35.53)4.18(39.52)9.27(48.69)17.04(62.67)22.69(72.84)27.14(80.85)25.47(77.85)20.86(69.55)13.59(56.46)6.41(43.54)1.96(35.53)12.53(54.55)
Average low °C (°F)-4.6(23.72)-2.44(27.61)-0.43(31.23)3.81(38.86)10.15(50.27)15.34(59.61)19.9(67.82)19.05(66.29)14.98(58.96)8.8(47.84)2.16(35.89)-1.92(28.54)7.07(44.73)
Record low °C (°F)-20.0(-4.0)-16.0(3.2)-13.0(8.6)-3.0(26.6)1.0(33.8)8.0(46.4)16.0(60.8)11.0(51.8)6.0(42.8)-2.0(28.4)-11.0(12.2)-12.0(10.4)-20.0(-4.0)
Average precipitation mm (inches)31.86(1.25)28.05(1.1)38.8(1.53)41.77(1.64)23.2(0.91)29.32(1.15)33.15(1.31)34.52(1.36)19.42(0.76)39.45(1.55)43.76(1.72)45.05(1.77)34.03(1.34)
Average precipitation days (≥ 1.0 mm)2.093.363.184.183.733.273.733.092.183.363.452.453.17
Average relative humidity (%)68.169.7870.4167.767.6767.7268.5670.1470.7773.8371.9373.5270.01
Mean monthly sunshine hours6.688.588.8810.1812.4813.1413.3612.4710.317.936.646.699.78

Climate Graph

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

Wellesley

Wellesley Temperature by Month

July
27.14°C | 80.85°F
August
25.47°C | 77.85°F
June
22.69°C | 72.84°F
September
20.86°C | 69.55°F
May
17.04°C | 62.67°F
October
13.59°C | 56.46°F
April
9.27°C | 48.69°F
November
6.41°C | 43.54°F
March
4.18°C | 39.52°F
February
1.96°C | 35.53°F
December
1.96°C | 35.53°F
January
-0.23°C | 31.59°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature29.0°C (84.2°F)18.16°C (64.69°F)7.0°C (44.6°F)
Avg Temperature25.0°C (77.0°F)15.32°C (59.58°F)4.0°C (39.2°F)
Min Temperature20.0°C (68.0°F)8.81°C (47.86°F)1.0°C (33.8°F)
Dew PointMaxAverageMin
Dew Point18.0°C (64.4°F)6.58°C (43.84°F)-3.0°C (26.6°F)
PrecipitationMaxAverageMinSum
Precipitation31.4mm | 1.24in3.33mm | 0.13in0.0mm | 0in103.3mm | 4.07in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind24.0kmh | 14.91mph13.71kmh | 8.52mph7.0kmh | 4.35mph
Gust Wind32.0kmh | 19.88mph18.9kmh | 11.74mph9.0kmh | 5.59mph
Sea Level PressureMaxAverageMin
Sea Level Pressure31.4mb3.33mb0.0mb
Wellesley

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
May° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2020-05-0115 | 59.012 | 53.69214 | 8.729.77 | 100812.0 | 0.47
2020-05-0214 | 57.25 | 41.06117 | 10.5629.74 | 10073.4 | 0.13
2020-05-0319 | 66.210 | 50.06612 | 7.4629.68 | 10050.8 | 0.03
2020-05-0413 | 55.44 | 39.26019 | 11.8129.59 | 10020.6 | 0.02
2020-05-0511 | 51.80 | 32.05416 | 9.9429.77 | 10080.0 | 0.0
2020-05-0610 | 50.01 | 33.85910 | 6.2129.8 | 10090.1 | 0.0
2020-05-0712 | 53.63 | 37.46711 | 6.8429.68 | 10056.2 | 0.24
2020-05-0810 | 50.01 | 33.86216 | 9.9429.68 | 10052.8 | 0.11
2020-05-094 | 39.20 | 32.07824 | 14.9129.44 | 99731.4 | 1.24
2020-05-1010 | 50.0-1 | 30.25520 | 12.4329.85 | 10110.0 | 0.0
2020-05-1112 | 53.67 | 44.68015 | 9.3229.74 | 100710.9 | 0.43
2020-05-1210 | 50.0-3 | 26.65318 | 11.1829.85 | 10110.1 | 0.0
2020-05-1310 | 50.0-3 | 26.64716 | 9.9430.12 | 10200.0 | 0.0
2020-05-1415 | 59.01 | 33.84811 | 6.8430.24 | 10240.0 | 0.0
2020-05-1517 | 62.613 | 55.48910 | 6.2129.88 | 101228.5 | 1.12
2020-05-1616 | 60.810 | 50.08110 | 6.2129.94 | 10140.7 | 0.03
2020-05-1715 | 59.06 | 42.8678 | 4.9730.27 | 10250.0 | 0.0
2020-05-1814 | 57.28 | 46.4777 | 4.3530.21 | 10230.8 | 0.03
2020-05-1913 | 55.43 | 37.45815 | 9.3230.3 | 10260.0 | 0.0
2020-05-2014 | 57.23 | 37.45610 | 6.2130.45 | 10310.0 | 0.0
2020-05-2119 | 66.25 | 41.0529 | 5.5930.36 | 10280.0 | 0.0
2020-05-2221 | 69.810 | 50.06215 | 9.3230.12 | 10200.0 | 0.0
2020-05-2315 | 59.09 | 48.27314 | 8.730.09 | 10190.0 | 0.0
2020-05-2413 | 55.44 | 39.26411 | 6.8430.3 | 10260.0 | 0.0
2020-05-2517 | 62.610 | 50.0787 | 4.3530.24 | 10240.0 | 0.0
2020-05-2625 | 77.015 | 59.07410 | 6.2130.21 | 10230.0 | 0.0
2020-05-2725 | 77.016 | 60.87315 | 9.3230.21 | 10230.0 | 0.0
2020-05-2822 | 71.617 | 62.68015 | 9.3230.18 | 10220.0 | 0.0
2020-05-2923 | 73.418 | 64.48020 | 12.4330.0 | 10160.3 | 0.01
2020-05-3024 | 75.216 | 60.87314 | 8.729.83 | 10104.7 | 0.19
2020-05-3117 | 62.64 | 39.24616 | 9.9429.94 | 10140.0 | 0.0

Wellesley 3 Year Historical Weather Data

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