New Haven climate

New Haven Weather in August

NOAA 1991-2020 normals for Rosebud, 22.1 km from New Haven

Average highs run from 88°F on August 1 to 84°F on August 31, and lows from 63°F to 58°F. Normal precipitation for the month is 3.94 in over about 8 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 New Haven, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
87°F
Average low
61°F
Precipitation
3.94 in
Record high
103°FAug 3, 2011
Record low
48°FAug 26, 2025
Chance of a freeze
0%
Days of 90°F or more
10.4
Daylight
14 h 08 min to 13 h 03 min
Cloud cover
48%
Humidity
69%
Dew point
64°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 188°F63°F102°F 201259°F 200927%0%
Aug 288°F63°F98°F 201259°F 200927%0%
Aug 388°F63°F103°F 201158°F 201427%0%
Aug 488°F63°F99°F 201057°F 202127%0%
Aug 588°F63°F98°F 201055°F 201727%0%
Aug 688°F63°F96°F 201855°F 201727%0%
Aug 788°F63°F98°F 201858°F 202027%0%
Aug 888°F63°F96°F 201261°F 201727%0%
Aug 988°F63°F96°F 201255°F 201727%0%
Aug 1088°F63°F96°F 200955°F 202427%0%
Aug 1187°F62°F99°F 201055°F 202427%0%
Aug 1287°F62°F98°F 201055°F 202427%0%
Aug 1387°F62°F96°F 201055°F 201727%0%
Aug 1487°F62°F99°F 201054°F 201327%0%
Aug 1587°F62°F96°F 201053°F 201327%0%
Aug 1687°F62°F96°F 202555°F 201327%0%
Aug 1787°F62°F100°F 202555°F 201327%0%
Aug 1887°F61°F98°F 202551°F 201226%0%
Aug 1987°F61°F97°F 202552°F 201226%0%
Aug 2086°F61°F96°F 201052°F 201226%0%
Aug 2186°F61°F100°F 202355°F 201226%0%
Aug 2286°F61°F94°F 201451°F 202426%0%
Aug 2386°F60°F97°F 202353°F 201826%0%
Aug 2486°F60°F95°F 201253°F 201526%0%
Aug 2586°F60°F98°F 202151°F 201526%0%
Aug 2685°F60°F99°F 202348°F 202526%0%
Aug 2785°F59°F97°F 202449°F 202526%0%
Aug 2885°F59°F99°F 202451°F 202526%0%
Aug 2985°F59°F96°F 201851°F 202526%0%
Aug 3084°F58°F96°F 202454°F 202526%0%
Aug 3184°F58°F97°F 201355°F 202326%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at New Haven, 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 6:07 AM, sunset 8:15 PM
August 31
sunrise 6:33 AM, sunset 7:36 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00237300 (Rosebud), public domain. Records: NOAA GHCN-Daily, station USC00238746, 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.