Sister Bay climate

Sister Bay Weather in August

NOAA 1991-2020 normals for Ephraim 1NE-Wwtp, 3.1 km from Sister Bay

Average highs run from 80°F on August 1 to 75°F on August 31, and lows from 58°F to 55°F. Normal precipitation for the month is 3.03 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 Sister Bay, 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
57°F
Precipitation
3.03 in
Record high
89°FAug 5, 2012
Record low
37°FAug 31, 2009
Chance of a freeze
0%
Daylight
14 h 42 min to 13 h 18 min
Cloud cover
62%
Humidity
81%
Dew point
62°F
Wind
11.6 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 180°F58°F88°F 201144°F 201931%0%
Aug 280°F58°F86°F 201150°F 202132%0%
Aug 380°F58°F85°F 201651°F 201332%0%
Aug 480°F58°F88°F 201653°F 201431%0%
Aug 580°F58°F89°F 201245°F 202031%0%
Aug 680°F58°F86°F 201848°F 200931%0%
Aug 780°F57°F86°F 201148°F 201731%0%
Aug 880°F57°F83°F 201246°F 201331%0%
Aug 980°F57°F85°F 201448°F 202231%0%
Aug 1080°F57°F88°F 200949°F 201331%0%
Aug 1179°F57°F87°F 201052°F 202231%0%
Aug 1279°F57°F84°F 201848°F 202231%0%
Aug 1379°F57°F86°F 201049°F 202431%0%
Aug 1479°F57°F87°F 201847°F 201331%0%
Aug 1579°F57°F88°F 201842°F 201431%0%
Aug 1679°F57°F85°F 201548°F 201431%0%
Aug 1778°F57°F87°F 201553°F 201332%0%
Aug 1878°F57°F86°F 200846°F 201232%0%
Aug 1978°F56°F86°F 200849°F 202632%0%
Aug 2078°F56°F86°F 202148°F 201232%0%
Aug 2178°F56°F84°F 201345°F 202432%0%
Aug 2277°F56°F87°F 201345°F 201132%0%
Aug 2377°F56°F83°F 200846°F 201932%0%
Aug 2477°F56°F87°F 201249°F 201932%0%
Aug 2577°F56°F84°F 201139°F 201732%0%
Aug 2677°F56°F89°F 201340°F 201732%0%
Aug 2776°F56°F87°F 202446°F 201532%0%
Aug 2876°F55°F82°F 201047°F 201132%0%
Aug 2976°F55°F84°F 201343°F 202532%0%
Aug 3076°F55°F86°F 201342°F 201832%0%
Aug 3175°F55°F88°F 201037°F 200931%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Sister Bay, 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 (CDT).

August 1
sunrise 5:33 AM, sunset 8:15 PM
August 31
sunrise 6:09 AM, sunset 7:27 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00472626 (Ephraim 1NE-Wwtp), public domain. Records: NOAA GHCN-Daily, station USC00472626, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.