Weather & Climate in Cowan, TN

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Cowan enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 40°F in January while summers reach 78°F in July. The area gets 301 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 57.7 inches (wetter than the 38-inch national average). The area receives 4.1 inches of snow annually. Air quality is rated Good with a median AQI of 40. The city sits at an elevation of 985 feet.

Temperature

40°F Jan (4°C) 78°F Jul (25°C)

Annual Average	59.2°F
	10% above US avg
January Average	40°F (4°C)
July Average	78°F (25°C)
Sunny Days	301 days/yr

Geography

Elevation	985 ft (300 m)
Area	2.1 sq mi (5.4 km²)
Population Density	842/sq mi
Coordinates	35.1630°N, 86.0141°W
Timezone	America/Chicago
County	Franklin County County
Nearest Airport	Tullahoma Regional/Wm Northern Field (THA) 20 miles away

Precipitation & Snow

Annual Rainfall 57.7"

52% above US avg

Snowfall 4.1"

Wettest Month (Mar) 6.69"

Driest Month (Aug) 3.74"

Air Quality

AQI Median	40.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	57.5 / 100
Social Vulnerability	38.0 / 100
Community Resilience	39.8 / 100

Hazard Breakdown

Tornado	Relatively Moderate
Hurricane	Very Low
Earthquake	Relatively Low
Wildfire	Very Low
Flood	Relatively Low
Hail	Relatively Low
Strong Wind	Relatively Moderate
Heat Wave	Relatively Low
Winter Weather	Relatively Moderate
Lightning	Relatively Low
Ice Storm	Relatively Low
Drought	Relatively Moderate
Cold Wave	Relatively Moderate
Landslide	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

111 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.

Apr 29, 2003	8 km S of Valley Head, Alabama	M4.6	82 km	20 km
Dec 8, 2001	5 km SW of Pleasant Groves, Alabama	M3.9	54 km	0 km
Jul 19, 1997	12 km E of Cohutta, Georgia	M3.5	112 km	3 km
Jun 19, 2007	10 km ENE of Spencer, Tennessee	M3.5	92 km	1 km
Apr 11, 2006	5 km NE of Etowah, Tennessee	M3.3	141 km	20 km
Mar 18, 1995	10 km SE of Dayton, Tennessee	M3.3	102 km	26 km
Apr 5, 1994	10 km N of Trenton, Georgia	M3.2	52 km	24 km
May 6, 2010	11 km ENE of Whitesboro, Alabama	M3.2	109 km	5 km
Mar 7, 2001	5 km WNW of Decatur, Tennessee	M3.2	114 km	18 km
Mar 7, 2001	6 km NW of Decatur, Tennessee	M3.2	114 km	7 km
Mar 21, 2001	7 km ESE of Trenton, Georgia	M3.2	63 km	0 km
May 10, 2020	7 km SSE of Sewanee, Tennessee	M3.1	11 km	8 km
Jun 23, 2008	10 km ESE of Cohutta, Georgia	M3.1	110 km	9 km
Jan 15, 1993	1 km N of Apison, Tennessee	M3.1	91 km	8 km
May 2, 2003	8 km S of Valley Head, Alabama	M3.1	83 km	15 km
Oct 30, 1991	9 km NNE of Eton, Georgia	M3.1	122 km	8 km
Apr 29, 2003	7 km E of Fort Payne, Alabama	M3.1	87 km	3 km
Nov 1, 2009	1 km ESE of South Cleveland, Tennessee	M3.0	106 km	25 km
May 4, 1994	12 km NNW of Addison, Alabama	M3.0	148 km	5 km
Jan 21, 2022	16 km NNE of Eton, Georgia	M2.9	120 km	15 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

564 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 142 fatalities, 2,157 injuries.

Date	Rating	Distance	Path	Fatalities
Apr 27, 2011	EF5	86 km	36.6 mi	25
Apr 27, 2011	EF4	42 km	30.2 mi	1
Apr 27, 2011	EF4	60 km	47.0 mi	14
Apr 27, 2011	EF4	57 km	40.2 mi	4
Apr 27, 2011	EF4	83 km	48.0 mi	20
Apr 24, 2010	EF4	95 km	16.6 mi	0
Feb 6, 2008	EF4	57 km	10.9 mi	1
Jan 24, 1997	EF4	82 km	6.5 mi	0
May 18, 1995	EF4	100 km	39.0 mi	1
Nov 15, 1989	EF4	81 km	18.5 mi	21
Apr 3, 1974	EF4	48 km	27.5 mi	11
May 19, 1973	EF4	81 km	5.4 mi	0
Feb 29, 1952	EF4	52 km	2.0 mi	2
Feb 13, 1952	EF4	26 km	12.7 mi	3
May 8, 2024	EF3	60 km	12.3 mi	0
Apr 1, 2023	EF3	55 km	12.0 mi	1
Apr 12, 2020	EF3	73 km	19.3 mi	2
Nov 30, 2016	EF3	57 km	13.5 mi	4
Apr 28, 2014	EF3	52 km	26.8 mi	2
Mar 2, 2012	EF3	97 km	34.0 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (4,213 acres, 2001).

Year	Name	Acres Burned	Distance
2001	UNNAMED	4,213	50 km
1987	STATEC0045	2,669	89 km
1999	UNNAMED	2,638	55 km
2006	UNNAMED	2,405	89 km
2007	WILDCAT BRANCH WFIRE	2,285	92 km
2018	RUFF CREEK	2,281	98 km
2016	BRIDGE CREEK ROAD	1,777	42 km
2014	SOUTH EAST COMPLEX	1,753	92 km
2016	BENCH BLUFF	1,715	85 km
2001	UNNAMED	1,691	39 km
2015	UNNAMED	1,669	99 km
2008	UNNAMED	1,530	98 km
2001	UNNAMED	1,491	100 km
2006	RD07-09	1,394	89 km
2004	UNNAMED	1,271	14 km
2001	UNNAMED	1,250	75 km
2004	UNNAMED	1,236	64 km
2001	UNNAMED	1,210	52 km
1999	UNNAMED	1,201	59 km
2001	UNNAMED	1,173	54 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	40°F (4°C)	5.5 in	Coldest
February	41°F (5°C)	5.2 in
March	49°F (10°C)	6.7 in	Wettest
April	57°F (14°C)	5.2 in
May	65°F (18°C)	5.3 in
June	72°F (22°C)	4.3 in
July	78°F (25°C)	5.1 in	Warmest
August	75°F (24°C)	3.7 in	Driest
September	69°F (21°C)	4.5 in
October	58°F (15°C)	3.9 in
November	49°F (9°C)	5.4 in
December	41°F (5°C)	5.9 in

Cowan has a seasonal temperature swing of 38°F / from 40°F in January to 78°F in July. Total annual precipitation is 60.6 inches, with March being the wettest month (6.7") and August the driest (3.7").

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