Smithville, TN Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Smithville's primary NOAA station, SMITHVILLE 2 SE.
The climate verdict for Smithville
Water is the standout signal in Smithville, Tennessee: 57.0 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 57°F. Its climate comfort score of 73/100 (good) lands mid-pack nationally, exceeding 66% of station-mapped location scores.
- 57°F
- average temperature, NOAA 1991-2020 normal
- 73/100
- comfort score, above 66% of station-mapped location scores
- 57.0"
- annual precipitation · 3" snow
- 187 days
- growing season, frost-free days
Smithville: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00408405 · Smithville, TN 57°F mean · 57.0" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 57°F
- RANK-UPPER #4,528
- PHOTO-FINISH ≈ London Corbin
- PRCP-WET 57.0"
- SWING-MID 40°F
- COMF-MID 73/100
- LOAD-HEAT 4,148 HDD
- STN-1 USC00408405
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: London Corbin, KY (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every TN station list.
- Smithville (this station) 57°F
- Hot Hiko, NV 57°F
- Near London Corbin, KY 57°F
- Near Summer Shade, KY 57°F
- Near Scottsville, KY 57°F
Climate Living Index · Smithville
Smithville: 60/100 · grade C
Smithville publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Smithville, not an official NOAA rating. Rankings still use Comfort Score 73/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 3.1 inches/year | 74/100 · B |
| Normal heat + freeze calendar | 105 calendar days | 73/100 · B |
| Annual temperature balance | 56.9°F · 10.6° from 67.5°F | 66/100 · C |
| Frost-free season | 187 days/year | 55/100 · C |
| Precipitation balance | 57.0 in · 22.0 from 35 in | 22/100 · F |
Smithville · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Smithville is a temperate Köppen climate: Cfa
Coldest-month mean 36.4°F and warmest-month mean 76.6°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 76.6°F
- Coldest month
- 36.4°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Smithville sits across the climate record
Three NOAA fields for Smithville's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 66th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 8% wettest
- Smithville's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- 36th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Smithville compares across U.S. station-mapped locations
Smithville's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
73 Top 34% score exceeds 66% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). This entry sits in this band.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Smithville's measured station temperature trend
MethodologyAcross 34 complete annual observations from 1972 to 2021, SMITHVILLE 2 SE warmed at a fitted rate of 0.30°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Smithville primary station fitted change +0.30 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 47°F (8°C) | 26°F (-4°C) | 36°F (2°C) | 4.9" | 1.1" | 22.7 | 0.0 |
| February | 52°F (11°C) | 28°F (-2°C) | 40°F (4°C) | 5.1" | 1.1" | 19.7 | 0.0 |
| March | 60°F (16°C) | 35°F (1°C) | 47°F (9°C) | 5.7" | 0.3" | 13.9 | 0.0 |
| April | 70°F (21°C) | 42°F (6°C) | 56°F (13°C) | 5.0" | 0.0" | 4.7 | 0.1 |
| May | 78°F (26°C) | 53°F (11°C) | 65°F (18°C) | 4.9" | 0.0" | 0.1 | 0.4 |
| June | 85°F (29°C) | 61°F (16°C) | 73°F (23°C) | 5.1" | 0.0" | 0.0 | 4.6 |
| July | 88°F (31°C) | 66°F (19°C) | 77°F (25°C) | 5.2" | 0.0" | 0.0 | 9.4 |
| August | 87°F (31°C) | 64°F (18°C) | 75°F (24°C) | 3.9" | 0.0" | 0.0 | 8.8 |
| September | 82°F (28°C) | 56°F (13°C) | 69°F (21°C) | 4.0" | 0.0" | 0.0 | 3.4 |
| October | 72°F (22°C) | 43°F (6°C) | 58°F (14°C) | 3.3" | 0.0" | 4.2 | 0.1 |
| November | 60°F (16°C) | 33°F (1°C) | 47°F (8°C) | 4.2" | 0.0" | 16.1 | 0.0 |
| December | 51°F (11°C) | 28°F (-2°C) | 40°F (4°C) | 5.7" | 0.6" | 21.1 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 88°F around July 12, short of 90°F on every date, while 105 dates carry a normal low at or below freezing, the coldest 25°F near January 21.
The freezing stretch
The normal low stays at or below 32°F into March 4, then returns to freezing around November 21, covering 105 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is December 24, when 45% of years recorded at least a hundredth of an inch. The driest is September 8 at 28%. Summed across the calendar, that is about 140 wet dates a year.
The widest day
October 20 carries the biggest normal gap between afternoon and dawn, 29°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Smithville.
Where Smithville Stands Nationally
This is one of the wettest normals climates ranked: about 57 inches of precipitation in a normal year, a total fewer than one station in ten surpasses.
Smithville earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 1.1"
13.6 days with precipitation
Snow: 1.1"
12.9 days with precipitation
Snow: 0.3"
13.4 days with precipitation
11.7 days with precipitation
12.7 days with precipitation
11.9 days with precipitation
12.0 days with precipitation
9.6 days with precipitation
8.8 days with precipitation
9.6 days with precipitation
10.2 days with precipitation
Snow: 0.6"
13.7 days with precipitation
Smithville spreads its precipitation across the year
Neither half of the year dominates here: June through August take 25% of the annual total and December through February 28%, with neither reaching the 35% that would mark a distinct wet season. Smithville has no dry season to plan around, though it does carry a 40.2°F seasonal spread.
The gap between the wettest and driest month still matters: March averages 5.7" and October 3.3". The three wettest months together take 29% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in Smithville, it arrives in quantity
57.0" of precipitation falls across only about 140 wet days here, averaging 0.41 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 140 a year, 38% of all days
- Average depth per wet day
- 0.41 inches
- Most wet days
- December, about 14
- Fewest wet days
- September, about 9
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Snow reaches Smithville, but rarely amounts to much
The normals record 3.1 inches of snow a year here, most likely in January. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 3 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
October 22
50% probability date
Last Spring Freeze
April 18
50% probability date
Growing Season
187 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,148
Higher = more heating needed
Cooling Degree Days
1,231
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside TN closest to Smithville on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (57°F here).
- Ashland, KS 57°F · 0.0°F off
- Beaver Dam, KY 57°F · 0.0°F off
- Benton, KY 57°F · 0.0°F off
- Clearlake, CA 57°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (57.0" here), excluding temperature-peer places.
- Alexander City, AL 57.0" · 0.0" off
- Homer, LA 57.0" · 0.0" off
- Chickamauga, GA 57.0" · 0.0" off
- Thomasville, AL 56.9" · 0.0" off
Data-derived climate profile
How Smithville's climate pattern fits together
heating led · wet · mid swing
Smithville's energy balance leans toward cold weather: 4,148 annual heating degree days against 1,231 for cooling. Its 40.2°F seasonal range still makes the monthly rows more useful than the annual average alone.
Smithville's frost-free season lasts about 187 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Smithville's middle-range seasonal profile. The measured spread is 40.2°F. The annual average is 57°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Alongside its heating load, Smithville carries 57.0 inches of precipitation in a normal year, inside PlainClimate's wet range. Annual snowfall totals 3.1 inches. That distinction matters because a wet annual total can arrive as rain, snow, or a mixture at different times.
These labels group NOAA 1991-2020 normals from Smithville's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Smithville, not an official NOAA class or a year-ahead forecast.
Questions about Smithville's climate
How much rain does Smithville get? ▼
How cold does Smithville get in winter? ▼
How much energy does heating and cooling require in Smithville? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Smithville's primary station: SMITHVILLE 2 SE (USC00408405). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 4769320). Match rule for Smithville: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Smithville comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.