Marengo climate

Marengo Weather in August

NOAA 1991-2020 normals for Williamsburg 1E, 16 km from Marengo

Average highs run from 84°F on August 1 to 80°F on August 31, and lows from 62°F to 56°F. Normal precipitation for the month is 4.47 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 Marengo, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
82°F
Average low
60°F
Precipitation
4.47 in
Record high
102°FAug 15, 1988
Record low
40°FAug 28, 1986
Chance of a freeze
0%
Days of 90°F or more
3.5
Daylight
14 h 24 min to 13 h 10 min
Cloud cover
52%
Humidity
73%
Dew point
62°F
Wind
7.8 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°F62°F101°F 198752°F 197329%0%
Aug 283°F62°F99°F 198850°F 197329%0%
Aug 383°F62°F99°F 198848°F 197629%0%
Aug 483°F62°F98°F 198847°F 197829%0%
Aug 583°F62°F93°F 198449°F 202029%0%
Aug 683°F61°F94°F 198448°F 200430%0%
Aug 783°F61°F95°F 198446°F 198930%0%
Aug 883°F61°F97°F 198848°F 197630%0%
Aug 983°F61°F95°F 200549°F 197230%0%
Aug 1083°F61°F98°F 198348°F 202430%0%
Aug 1183°F61°F95°F 198847°F 200430%0%
Aug 1283°F61°F95°F 195849°F 200430%0%
Aug 1383°F61°F98°F 196542°F 196430%0%
Aug 1482°F60°F97°F 198843°F 200430%0%
Aug 1582°F60°F102°F 198845°F 200430%0%
Aug 1682°F60°F100°F 198848°F 197630%0%
Aug 1782°F60°F100°F 198847°F 201230%0%
Aug 1882°F60°F96°F 198846°F 200230%0%
Aug 1982°F59°F99°F 198345°F 200430%0%
Aug 2082°F59°F98°F 198347°F 195629%0%
Aug 2182°F59°F95°F 195546°F 200429%0%
Aug 2282°F59°F93°F 197150°F 202429%0%
Aug 2381°F59°F100°F 202346°F 196629%0%
Aug 2481°F58°F99°F 202346°F 196629%0%
Aug 2581°F58°F95°F 195544°F 195829%0%
Aug 2681°F58°F95°F 195545°F 196429%0%
Aug 2781°F58°F97°F 195543°F 198629%0%
Aug 2881°F57°F96°F 195540°F 198629%0%
Aug 2981°F57°F95°F 198444°F 198629%0%
Aug 3081°F57°F100°F 195346°F 200929%0%
Aug 3180°F56°F98°F 195344°F 200928%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Marengo, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

August 1
sunrise 6:02 AM, sunset 8:26 PM
August 31
sunrise 6:33 AM, sunset 7:43 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00139067 (Williamsburg 1E), public domain. Records: NOAA GHCN-Daily, station USW00014990, 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.