Dorchester climate

Dorchester Weather in August

NOAA 1991-2020 normals for Friend 3E, 9.1 km from Dorchester

Average highs run from 84°F on August 1 to 81°F on August 31, and lows from 64°F to 57°F. Normal precipitation for the month is 3.41 in over about 10 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Dorchester, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
83°F
Average low
61°F
Precipitation
3.41 in
Record high
107°FAug 16, 1983
Record low
39°FAug 20, 1950
Chance of a freeze
0%
Days of 90°F or more
5.1
Daylight
14 h 19 min to 13 h 07 min
Cloud cover
49%
Humidity
66%
Dew point
62°F
Wind
8.9 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
Aug 184°F64°F105°F 198754°F 197333%0%
Aug 284°F64°F102°F 198353°F 195033%0%
Aug 384°F64°F102°F 200251°F 197833%0%
Aug 484°F64°F103°F 198945°F 197433%0%
Aug 584°F64°F102°F 195148°F 197433%0%
Aug 684°F64°F101°F 202249°F 199032%0%
Aug 784°F64°F104°F 198844°F 198932%0%
Aug 884°F63°F103°F 201250°F 198932%0%
Aug 984°F63°F104°F 198048°F 198932%0%
Aug 1083°F63°F102°F 198348°F 198532%0%
Aug 1183°F63°F99°F 198851°F 200432%0%
Aug 1283°F63°F102°F 200050°F 200432%0%
Aug 1383°F62°F100°F 199549°F 200432%0%
Aug 1483°F62°F101°F 198845°F 200432%0%
Aug 1583°F62°F102°F 198849°F 199232%0%
Aug 1683°F62°F107°F 198349°F 201231%0%
Aug 1783°F61°F104°F 198344°F 201231%0%
Aug 1882°F61°F103°F 198345°F 201231%0%
Aug 1982°F61°F104°F 202345°F 195031%0%
Aug 2082°F61°F98°F 197539°F 195031%0%
Aug 2182°F60°F102°F 202347°F 199430%0%
Aug 2282°F60°F105°F 202348°F 200930%0%
Aug 2382°F60°F103°F 194850°F 201530%0%
Aug 2482°F59°F105°F 202346°F 201530%0%
Aug 2582°F59°F104°F 202451°F 201529%0%
Aug 2681°F59°F101°F 197648°F 198829%0%
Aug 2781°F59°F100°F 198449°F 198829%0%
Aug 2881°F58°F103°F 198441°F 198829%0%
Aug 2981°F58°F99°F 194846°F 198829%0%
Aug 3081°F58°F102°F 194848°F 200929%0%
Aug 3181°F57°F102°F 198542°F 200928%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Dorchester, 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 (CDT).

August 1
sunrise 6:25 AM, sunset 8:44 PM
August 31
sunrise 6:55 AM, sunset 8:02 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00253065 (Friend 3E), public domain. Records: NOAA GHCN-Daily, station USW00014939, 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.