Calvert County climate

Calvert County Weather in August

NOAA 1991-2020 normals for Mechanicsville 5 Ne, 17.6 km from Calvert County

Average highs run from 85°F on August 1 to 81°F on August 31, and lows from 66°F to 62°F. Normal precipitation for the month is 4.84 in over about 9 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 Calvert County, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
83°F
Average low
64°F
Precipitation
4.84 in
Record high
103°FAug 20, 1983
Record low
52°FAug 24, 1985
Chance of a freeze
0%
Days of 90°F or more
4.1
Daylight
14 h 08 min to 13 h 03 min
Cloud cover
53%
Humidity
72%
Dew point
67°F
Wind
6.9 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 185°F66°F98°F 198360°F 199733%0%
Aug 285°F66°F98°F 199361°F 199833%0%
Aug 384°F66°F100°F 200659°F 198533%0%
Aug 484°F65°F97°F 196358°F 199833%0%
Aug 584°F65°F98°F 201055°F 199832%0%
Aug 684°F65°F97°F 195559°F 195132%0%
Aug 784°F65°F97°F 197757°F 200432%0%
Aug 884°F65°F100°F 200755°F 200432%0%
Aug 984°F65°F97°F 198360°F 196432%0%
Aug 1084°F65°F96°F 198660°F 200232%0%
Aug 1184°F65°F98°F 198358°F 201432%0%
Aug 1284°F65°F96°F 197757°F 197432%0%
Aug 1384°F65°F97°F 201657°F 200632%0%
Aug 1484°F65°F99°F 198557°F 201531%0%
Aug 1584°F64°F99°F 198555°F 201331%0%
Aug 1684°F64°F97°F 196655°F 201331%0%
Aug 1783°F64°F100°F 199759°F 197931%0%
Aug 1883°F64°F95°F 196660°F 200731%0%
Aug 1983°F64°F99°F 201960°F 200730%0%
Aug 2083°F64°F103°F 198359°F 202430%0%
Aug 2183°F64°F96°F 195957°F 202430%0%
Aug 2283°F64°F98°F 198356°F 202429%0%
Aug 2383°F64°F97°F 196455°F 199729%0%
Aug 2483°F63°F95°F 199552°F 198529%0%
Aug 2583°F63°F96°F 196856°F 198729%0%
Aug 2682°F63°F95°F 202258°F 196329%0%
Aug 2782°F63°F96°F 198356°F 194528%0%
Aug 2882°F63°F99°F 202455°F 198628%0%
Aug 2982°F63°F97°F 194853°F 198228%0%
Aug 3082°F62°F97°F 195353°F 198628%0%
Aug 3181°F62°F97°F 195355°F 198628%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Calvert County, 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).

August 1
sunrise 6:08 AM, sunset 8:16 PM
August 31
sunrise 6:35 AM, sunset 7:38 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00185865 (Mechanicsville 5 Ne), public domain. Records: NOAA GHCN-Daily, station USW00013721, 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.