Smithville weather by month
What a typical year looks like in Smithville, Tennessee: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Rock Island State Park, 23 km from Smithville; records cover 2006–2026.
The year at a glance
- Precipitation a year
- 59.4 in1509 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 1
- First fall freeze
- Nov 2
- Heating degree days
- 3,622
- Cooling degree days
- 1,401
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 12°−11° (heating, 99%) and 95°35° (cooling, 1%).
Month by month
Smithville in January
Highs average 48°9° and lows 29°−1°, with 5.1 in129 mm of precipitation in a typical January.
- Record high
- 78°26° (2022)
- Record low
- −1°−18° (2014)
- Heating degree days
- 821
- Cooling degree days
- 0
Smithville in February
Highs average 53°11° and lows 32°0°, with 5.1 in130 mm of precipitation in a typical February.
- Record high
- 82°28° (2023)
- Record low
- 3°−16° (2015)
- Heating degree days
- 634
- Cooling degree days
- 1
Smithville in March
Highs average 62°16° and lows 39°4°, with 6 in153 mm of precipitation in a typical March.
- Record high
- 85°29° (2016)
- Record low
- 15°−9° (2015)
- Heating degree days
- 460
- Cooling degree days
- 6
Smithville in April
Highs average 70°21° and lows 47°8°, with 5.2 in131 mm of precipitation in a typical April.
- Record high
- 89°32° (2017)
- Record low
- 22°−6° (2007)
- Heating degree days
- 226
- Cooling degree days
- 33
Smithville in May
Highs average 78°26° and lows 56°13°, with 4.8 in121 mm of precipitation in a typical May.
- Record high
- 92°33° (2012)
- Record low
- 35°2° (2020)
- Heating degree days
- 64
- Cooling degree days
- 127
Smithville in June
Highs average 84°29° and lows 64°18°, with 5.4 in136 mm of precipitation in a typical June.
- Record high
- 107°42° (2012)
- Record low
- 50°10° (2019)
- Heating degree days
- 1
- Cooling degree days
- 280
Smithville in July
Highs average 87°30° and lows 68°20°, with 5.3 in134 mm of precipitation in a typical July.
- Record high
- 104°40° (2012)
- Record low
- 55°13° (2007)
- Heating degree days
- 0
- Cooling degree days
- 375
Smithville in August
Highs average 86°30° and lows 67°19°, with 4.3 in109 mm of precipitation in a typical August.
- Record high
- 103°39° (2007)
- Record low
- 52°11° (2025)
- Heating degree days
- 0
- Cooling degree days
- 349
Smithville in September
Highs average 80°27° and lows 61°16°, with 4 in103 mm of precipitation in a typical September.
- Record high
- 98°37° (2026)
- Record low
- 41°5° (2012)
- Heating degree days
- 26
- Cooling degree days
- 189
Smithville in OctoberThis month
Highs average 71°22° and lows 48°9°, with 3.5 in88 mm of precipitation in a typical October.
- Record high
- 95°35° (2019)
- Record low
- 27°−3° (2013)
- Heating degree days
- 211
- Cooling degree days
- 37
Smithville in November
Highs average 61°16° and lows 38°3°, with 4.6 in116 mm of precipitation in a typical November.
- Record high
- 85°29° (2016)
- Record low
- 15°−9° (2019)
- Heating degree days
- 472
- Cooling degree days
- 4
Smithville in December
Highs average 52°11° and lows 32°0°, with 6.2 in158 mm of precipitation in a typical December.
- Record high
- 77°25° (2007)
- Record low
- 4°−16° (2022)
- Heating degree days
- 707
- Cooling degree days
- 0