Princeton climate

Princeton Weather in August

NOAA 1991-2020 normals for Smithfield, 17.5 km from Princeton

Average highs run from 91°F on August 1 to 87°F on August 31, and lows from 70°F to 67°F. Normal precipitation for the month is 5.28 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 Princeton, in °F, with the record for each date.5060708090100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
89°F
Average low
69°F
Precipitation
5.28 in
Record high
98°FAug 4, 2011
Record low
55°FAug 22, 2024
Chance of a freeze
0%
Days of 90°F or more
13.7
Daylight
13 h 55 min to 12 h 57 min
Cloud cover
56%
Humidity
75%
Dew point
69°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 191°F70°F95°F 202259°F 201738%0%
Aug 291°F70°F95°F 202259°F 201737%0%
Aug 391°F70°F92°F 201162°F 202537%0%
Aug 491°F70°F98°F 201165°F 202337%0%
Aug 591°F70°F95°F 201162°F 201337%0%
Aug 691°F70°F96°F 201562°F 201337%0%
Aug 790°F70°F92°F 201566°F 202536%0%
Aug 890°F70°F95°F 201165°F 202536%0%
Aug 990°F69°F96°F 202264°F 201536%0%
Aug 1090°F69°F95°F 201164°F 201736%0%
Aug 1190°F69°F96°F 202264°F 201736%0%
Aug 1290°F69°F93°F 202667°F 201535%0%
Aug 1390°F69°F92°F 201363°F 202235%0%
Aug 1490°F69°F94°F 202361°F 201435%0%
Aug 1590°F69°F95°F 202661°F 201335%0%
Aug 1689°F69°F96°F 202361°F 201335%0%
Aug 1789°F69°F94°F 202563°F 201334%0%
Aug 1889°F68°F96°F 202663°F 202234%0%
Aug 1989°F68°F94°F 202663°F 202233%0%
Aug 2089°F68°F93°F 202664°F 202233%0%
Aug 2189°F68°F95°F 202659°F 202433%0%
Aug 2289°F68°F92°F 201655°F 202432%0%
Aug 2389°F68°F92°F 201955°F 202432%0%
Aug 2488°F68°F91°F 201755°F 202432%0%
Aug 2588°F68°F91°F 202158°F 202432%0%
Aug 2688°F67°F92°F 202157°F 201331%0%
Aug 2788°F67°F95°F 201657°F 201331%0%
Aug 2888°F67°F94°F 201658°F 202531%0%
Aug 2988°F67°F93°F 202458°F 202531%0%
Aug 3087°F67°F95°F 202460°F 202531%0%
Aug 3187°F67°F93°F 202155°F 202530%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Princeton, 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 6:21 AM, sunset 8:16 PM
August 31
sunrise 6:44 AM, sunset 7:41 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00317994 (Smithfield), public domain. Records: NOAA GHCN-Daily, station USC00313503, 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.