Shackle Island climate

Shackle Island Weather in September

NOAA 1991-2020 normals for Old Hickory Dam, 9.1 km from Shackle Island

Average highs run from 88°F on September 1 to 78°F on September 30, and lows from 65°F to 54°F. Normal precipitation for the month is 3.70 in over about 7 wet days.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Shackle Island, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
83°F
Average low
60°F
Precipitation
3.70 in
Record high
101°FSep 4, 2026
Record low
33°FSep 26, 2001
Chance of a freeze
0%
Days of 90°F or more
8.9
Daylight
12 h 56 min to 11 h 50 min
Cloud cover
48%
Humidity
69%
Dew point
59°F
Wind
6.0 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
Sep 188°F65°F95°F 201154°F 199922%0%
Sep 288°F64°F98°F 202655°F 200922%0%
Sep 387°F64°F98°F 201148°F 201722%0%
Sep 487°F64°F101°F 202649°F 201722%0%
Sep 587°F64°F96°F 200746°F 199722%0%
Sep 687°F63°F100°F 202646°F 199722%0%
Sep 786°F63°F97°F 199945°F 201722%0%
Sep 886°F63°F95°F 200245°F 201722%0%
Sep 986°F62°F97°F 199947°F 201722%0%
Sep 1085°F62°F96°F 200245°F 199822%0%
Sep 1185°F62°F97°F 201945°F 199822%0%
Sep 1285°F61°F93°F 201948°F 199822%0%
Sep 1384°F61°F93°F 201942°F 201522%0%
Sep 1484°F61°F94°F 201945°F 201522%0%
Sep 1584°F60°F95°F 199845°F 201522%0%
Sep 1683°F60°F93°F 201644°F 200022%0%
Sep 1783°F60°F95°F 201945°F 199923%0%
Sep 1883°F59°F92°F 199843°F 199923%0%
Sep 1982°F59°F93°F 199844°F 199923%0%
Sep 2082°F58°F94°F 199745°F 200623%0%
Sep 2182°F58°F94°F 201842°F 200623%0%
Sep 2281°F58°F97°F 202243°F 200623%0%
Sep 2381°F57°F91°F 201038°F 199923%0%
Sep 2481°F57°F93°F 200739°F 199923%0%
Sep 2580°F56°F92°F 200742°F 200123%0%
Sep 2680°F56°F94°F 200733°F 200123%0%
Sep 2780°F55°F92°F 199833°F 200123%0%
Sep 2879°F55°F95°F 199833°F 200123%0%
Sep 2979°F55°F92°F 199837°F 200323%0%
Sep 3078°F54°F95°F 201937°F 200323%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Shackle Island, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:18 AM, sunset 7:14 PM
September 30
sunrise 6:41 AM, sunset 6:31 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00406803 (Old Hickory Dam), public domain. Records: NOAA GHCN-Daily, station USC00400669, 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.