Cornwall climate

Cornwall Weather in August

NOAA 1991-2020 normals for Lebanon 2 W, 8.4 km from Cornwall

Average highs run from 84°F on August 1 to 80°F on August 31, and lows from 64°F to 60°F. Normal precipitation for the month is 4.63 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 Cornwall, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
82°F
Average low
63°F
Precipitation
4.63 in
Record high
100°FAug 23, 2012
Record low
46°FAug 21, 2000
Chance of a freeze
0%
Days of 90°F or more
3.1
Daylight
14 h 17 min to 13 h 07 min
Cloud cover
57%
Humidity
71%
Dew point
61°F
Wind
3.6 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°F96°F 200259°F 200134%0%
Aug 284°F64°F99°F 200257°F 202534%0%
Aug 384°F64°F96°F 200656°F 202534%0%
Aug 484°F64°F94°F 202257°F 199934%0%
Aug 584°F64°F93°F 201255°F 201334%0%
Aug 683°F64°F93°F 200153°F 200434%0%
Aug 783°F64°F96°F 200153°F 200234%0%
Aug 883°F64°F97°F 200152°F 200434%0%
Aug 983°F64°F99°F 200155°F 200234%0%
Aug 1083°F64°F94°F 200154°F 199934%0%
Aug 1183°F63°F93°F 200254°F 200834%0%
Aug 1283°F63°F96°F 200252°F 200634%0%
Aug 1383°F63°F97°F 200252°F 200634%0%
Aug 1483°F63°F98°F 200253°F 201333%0%
Aug 1583°F63°F93°F 200250°F 201333%0%
Aug 1683°F63°F91°F 200250°F 201433%0%
Aug 1783°F63°F94°F 200255°F 201333%0%
Aug 1882°F63°F95°F 200254°F 201433%0%
Aug 1982°F62°F92°F 200255°F 200032%0%
Aug 2082°F62°F92°F 201950°F 200832%0%
Aug 2182°F62°F91°F 202346°F 200032%0%
Aug 2282°F62°F93°F 201748°F 200032%0%
Aug 2382°F62°F100°F 201249°F 201631%0%
Aug 2482°F62°F90°F 202053°F 200331%0%
Aug 2581°F62°F93°F 202153°F 201331%0%
Aug 2681°F61°F93°F 202153°F 202531%0%
Aug 2781°F61°F95°F 202050°F 202531%0%
Aug 2881°F61°F94°F 201850°F 202531%0%
Aug 2981°F61°F95°F 201851°F 201430%0%
Aug 3081°F61°F94°F 202251°F 199930%0%
Aug 3180°F60°F96°F 201054°F 200930%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cornwall, 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 6:03 AM, sunset 8:20 PM
August 31
sunrise 6:32 AM, sunset 7:39 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00364896 (Lebanon 2 W), public domain. Records: NOAA GHCN-Daily, station USW00054737, 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.