Princeton climate

Princeton Weather in August

NOAA 1991-2020 normals for Grand Lake Stream, 16.6 km from Princeton

Average highs run from 79°F on August 1 to 75°F on August 31, and lows from 58°F to 54°F. Normal precipitation for the month is 2.77 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 Princeton, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
78°F
Average low
56°F
Precipitation
2.77 in
Record high
98°FAug 28, 1952
Record low
34°FAug 24, 1945
Chance of a freeze
0%
Days of 90°F or more
1.2
Daylight
14 h 42 min to 13 h 18 min
Cloud cover
59%
Humidity
84%
Dew point
60°F
Wind
4.9 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 179°F58°F88°F 202446°F 196531%0%
Aug 279°F58°F93°F 200742°F 194731%0%
Aug 379°F58°F90°F 201243°F 195331%0%
Aug 479°F58°F90°F 200743°F 196431%0%
Aug 579°F58°F89°F 201644°F 195131%0%
Aug 679°F58°F95°F 200144°F 195130%0%
Aug 779°F58°F92°F 202241°F 195030%0%
Aug 879°F58°F90°F 194944°F 195030%0%
Aug 979°F57°F92°F 200141°F 194530%0%
Aug 1079°F57°F93°F 202542°F 196430%0%
Aug 1178°F57°F97°F 202547°F 196430%0%
Aug 1278°F57°F96°F 202544°F 196829%0%
Aug 1378°F57°F95°F 194740°F 194629%0%
Aug 1478°F57°F95°F 194746°F 200629%0%
Aug 1578°F57°F95°F 200245°F 194929%0%
Aug 1678°F57°F89°F 197041°F 194929%0%
Aug 1778°F57°F90°F 201540°F 196329%0%
Aug 1878°F56°F91°F 200945°F 200529%0%
Aug 1978°F56°F89°F 201541°F 202529%0%
Aug 2077°F56°F91°F 202142°F 196829%0%
Aug 2177°F56°F92°F 194539°F 195329%0%
Aug 2277°F56°F87°F 194943°F 200729%0%
Aug 2377°F56°F92°F 194740°F 195429%0%
Aug 2477°F55°F88°F 201434°F 194529%0%
Aug 2577°F55°F90°F 201438°F 194929%0%
Aug 2676°F55°F91°F 202137°F 196329%0%
Aug 2776°F55°F96°F 195241°F 194729%0%
Aug 2876°F55°F98°F 195241°F 200929%0%
Aug 2976°F54°F92°F 201042°F 194729%0%
Aug 3076°F54°F92°F 195338°F 194729%0%
Aug 3175°F54°F95°F 201039°F 194629%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 5:15 AM, sunset 7:57 PM
August 31
sunrise 5:51 AM, sunset 7:09 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00173261 (Grand Lake Stream), public domain. Records: NOAA GHCN-Daily, station USW00014610, 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.