Spring City, Tennessee climate: Normal weather by month, frost dates and records
Spring City's normal year runs from 26°F January nights to 87°F July afternoons, with 59.4 inches of precipitation and 1 inch of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.1°C, January lows of −3°C, July highs of 31°C, 1,509 mm of precipitation a year.
- NOAA stationSpring City
- Station IDUSC00408540
- Location35.68°N 84.85°W
- Elevation755 ft (230 m)
- From the centerunder 1 mile
- Population1,996
On October 22, the normal high in Spring City is 69°F and the normal low 43°F, and the chance of measurable rain or snow is 28%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Spring City.
- Jan 48° 26°
- Feb 52° 29°
- Mar 60° 35°
- Apr 71° 44°
- May 77° 54°
- Jun 84° 62°
- Jul 87° 67°
- Aug 87° 65°
- Sep 81° 58°
- Oct 71° 46°
- Nov 59° 35°
- Dec 50° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Spring City each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 26°F. The most precipitation falls in December (6.01 in), the least in August (3.07 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 48°F | 26°F | 36.9°F | 5.71 | 0.4 | 12 | <1 | 22 | 10 h |
| February | 52°F | 29°F | 40.5°F | 5.24 | 0.7 | 13 | <1 | 19 | 10 h 50 min |
| March | 60°F | 35°F | 47.8°F | 5.46 | 0.1 | 11 | <1 | 12 | 11 h 50 min |
| April | 71°F | 44°F | 57.0°F | 5.60 | 0.0 | 10 | <1 | 3 | 13 h |
| May | 77°F | 54°F | 65.3°F | 4.13 | 0.0 | 11 | <1 | <1 | 14 h |
| June | 84°F | 62°F | 73.0°F | 5.06 | 0.0 | 11 | 5 | <1 | 14 h 30 min |
| July | 87°F | 67°F | 76.7°F | 5.61 | 0.0 | 13 | 10 | <1 | 14 h 20 min |
| August | 87°F | 65°F | 75.9°F | 3.07 | 0.0 | 10 | 9 | <1 | 13 h 30 min |
| September | 81°F | 58°F | 69.7°F | 4.77 | 0.0 | 8 | 4 | <1 | 12 h 30 min |
| October | 71°F | 46°F | 58.2°F | 3.63 | 0.0 | 8 | <1 | 2 | 11 h 20 min |
| November | 59°F | 35°F | 46.8°F | 5.11 | 0.0 | 9 | <1 | 14 | 10 h 20 min |
| December | 50°F | 30°F | 39.9°F | 6.01 | 0.1 | 12 | <1 | 20 | 9 h 50 min |
| Year (annual) | 69°F | 46°F | 57.3°F | 59.40 | 1.3 | 127 | 28 | 91 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 9°C | −3°C | 2.7°C | 145 mm | 1 cm |
| February | 11°C | −2°C | 4.7°C | 133 mm | 2 cm |
| March | 16°C | 2°C | 8.8°C | 139 mm | 0 cm |
| April | 21°C | 6°C | 13.9°C | 142 mm | 0 cm |
| May | 25°C | 12°C | 18.5°C | 105 mm | 0 cm |
| June | 29°C | 17°C | 22.8°C | 129 mm | 0 cm |
| July | 31°C | 19°C | 24.8°C | 142 mm | 0 cm |
| August | 30°C | 18°C | 24.4°C | 78 mm | 0 cm |
| September | 27°C | 15°C | 20.9°C | 121 mm | 0 cm |
| October | 22°C | 8°C | 14.6°C | 92 mm | 0 cm |
| November | 15°C | 2°C | 8.2°C | 130 mm | 0 cm |
| December | 10°C | −1°C | 4.4°C | 153 mm | 0 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00408540; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Spring City?
Normal highs sit between 65°F and 85°F in April, May, June, September and October. Of those, September has the fewest days with rain (8).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00408540.
When is the last frost in Spring City?
In Spring City, the last spring frost (32°F) comes after April 11 in half of years and after May 1 in one year in ten; the first autumn frost comes before October 29 in half of years and before October 16 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 111 year in 10 after May 1; 9 in 10 after March 27
- First autumn frost, half of years before
- October 291 year in 10 before October 16; 9 in 10 before November 11
NOAA puts the median frost-free season at 200 days, and the season without a hard freeze (28°F) at 224 days.
A hard freeze (28°F) comes after March 30 in half of springs and before November 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Spring City in zone 7b in ZIP code 37381, the nearest ZIP area.
Frost dates for every NOAA station in Tennessee · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00408540; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Spring City?
In a normal year in Spring City, 28 days a year reach 90°F (1 of them 100°F or more), 91 nights fall to 32°F or colder and 127 days bring measurable precipitation.
- Days at 90°F or more
- 28a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 91a normal year
- Days that stay below freezing
- 5high of 32°F or less
- Days with 0.01 inch of precipitation
- 127a normal year
- Days with 1 inch of snow or more
- fewer than 1a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00408540.
How sunny is Spring City?
Over a year 74% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Spring City, 4.3 kWh per square metre a day. August is the sunniest month (79%) and February the cloudiest (63%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 67% | 2.4 |
| February | 63% | 2.9 |
| March | 68% | 4.0 |
| April | 75% | 5.3 |
| May | 76% | 5.9 |
| June | 79% | 6.3 |
| July | 78% | 6.0 |
| August | 79% | 5.5 |
| September | 79% | 4.8 |
| October | 76% | 3.8 |
| November | 75% | 2.8 |
| December | 65% | 2.1 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Spring City need?
A normal year in Spring City brings 4,019 heating degree days, 25% fewer than the median U.S. place (5,373), and 1,246 cooling degree days, 37% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,092 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 873 | 0 |
| February | 688 | 0 |
| March | 535 | 2 |
| April | 255 | 17 |
| May | 81 | 91 |
| June | 3 | 244 |
| July | 0 | 363 |
| August | 0 | 340 |
| September | 26 | 167 |
| October | 234 | 22 |
| November | 547 | 1 |
| December | 778 | 0 |
| Year (annual) | 4,019 | 1,246 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00408540. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Spring City been warmer than normal lately?
2025 averaged 58.3°F, 1.0°F above the 1991-2020 normal of 57.3°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 57.9°F | +0.6°F | 57.75 | 0.0 |
| 2022 | 57.6°F | +0.3°F | 68.53 | 3.5 |
| 2023 | 58.7°F | +1.4°F | 58.39 | 0.0 |
| 2024 | 59.5°F | +2.2°F | 54.95 | 5.0 |
| 2025 | 58.3°F | +1.0°F | 63.01 | 5.6 |
Source: observed years: ACIS, station USC00408540. A year counts only with all twelve months complete.
How does Spring City's climate compare?
Spring City is warmer than 26 of the other 115 places with their own NOAA record in Tennessee, and wetter than 92. Across the 7,247 U.S. stations with normals, its annual mean of 57.3°F is warmer than 67%.
In the Köppen classification computed from these normals, Spring City is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about Spring City's climate
What is the coldest month in Spring City?
January, with a normal high of 48°F and a normal low of 26°F. The warmest is July (87°F by day, 67°F at night).
Does it snow in Spring City?
Yes: 1 inch in a normal year, falling on 1 days with 0.1 inch or more, the most in February (0.7 inches).
What is the rainiest month in Spring City?
December, with 6.01 in of precipitation in a normal year; the driest is August with 3.07 in.
What plant hardiness zone is Spring City in?
The USDA's 2023 map puts Spring City in zone 7b in ZIP code 37381, the nearest ZIP area.
How late can frost come in Spring City?
In half of years the last 32°F night comes after April 11; in one year in ten it comes after May 1. Waiting until May 1 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Tennessee climateThe statewide normals and every place in the state
- Decatur, TN11 miles from this station, 58.4°F a year
- Rockwood, TN14 miles from this station, 57.5°F a year
- Dayton, TN16 miles from this station, 58.4°F a year
- Pikeville, TN20 miles from this station, 59.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made