Weather & Climate in Philadelphia, TN

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

Philadelphia enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 38°F in January while summers reach 79°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 55.2 inches (wetter than the 38-inch national average). The area receives 4.0 inches of snow annually. Air quality is rated Good with a median AQI of 40. The city sits at an elevation of 879 feet.

Temperature

38°F Jan (4°C) 79°F Jul (26°C)

Annual Average	59.1°F
	9% above US avg
January Average	38°F (4°C)
July Average	79°F (26°C)
Sunny Days	301 days/yr

Geography

Elevation	879 ft (268 m)
Area	1.6 sq mi (4.1 km²)
Population Density	463/sq mi
Coordinates	35.6791°N, 84.3999°W
Timezone	America/Chicago
County	Loudon County County
Nearest Airport	Mc Ghee Tyson (TYS) 25 miles away

Precipitation & Snow

Annual Rainfall 55.2"

45% above US avg

Snowfall 4.0"

Wettest Month (Mar) 5.59"

Driest Month (Oct) 3.23"

Air Quality

AQI Median	40.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	68.4 / 100
Social Vulnerability	68.1 / 100
Community Resilience	68.0 / 100

Hazard Breakdown

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

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

Earthquake History

193 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.1.

May 10, 2025	21 km SE of Greenback, Tennessee	M4.1	40 km	25 km
Jul 30, 1997	6 km NNE of Tazewell, Tennessee	M3.8	120 km	23 km
Jan 20, 2020	2 km NE of Fincastle, Tennessee	M3.8	90 km	35 km
Sep 17, 2004	8 km ESE of Corbin, Kentucky	M3.7	144 km	1 km
Jul 5, 1995	12 km ESE of Tellico Plains, Tennessee	M3.7	44 km	10 km
Jun 17, 1998	9 km SSE of Coalfield, Tennessee	M3.6	30 km	11 km
Jul 19, 1997	12 km E of Cohutta, Georgia	M3.5	89 km	3 km
Jun 19, 2007	10 km ENE of Spencer, Tennessee	M3.5	88 km	1 km
Jun 16, 2006	9 km W of Maggie Valley, North Carolina	M3.4	110 km	1 km
Mar 5, 2019	7 km NE of Maynardville, Tennessee	M3.4	91 km	17 km
Mar 18, 1995	10 km SE of Dayton, Tennessee	M3.3	57 km	26 km
Apr 20, 2010	4 km SW of Maryville, Tennessee	M3.3	36 km	2 km
Aug 31, 2009	2 km NNE of Friendsville, Tennessee	M3.3	27 km	14 km
Apr 11, 2006	5 km NE of Etowah, Tennessee	M3.3	36 km	20 km
Jun 4, 2023	4 km NNW of West Canton, North Carolina	M3.2	139 km	0 km
Mar 21, 2001	7 km ESE of Trenton, Georgia	M3.2	132 km	0 km
Mar 7, 2001	5 km WNW of Decatur, Tennessee	M3.2	43 km	18 km
Jan 27, 2009	4 km NE of Williamsburg, Kentucky	M3.2	124 km	26 km
Apr 5, 1994	10 km N of Trenton, Georgia	M3.2	127 km	24 km
Aug 1, 2009	8 km ENE of Ducktown, Tennessee	M3.2	69 km	5 km

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

Tornado History

252 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 53 fatalities, 891 injuries.

Date	Rating	Distance	Path	Fatalities
Apr 27, 2011	EF4	36 km	14.5 mi	0
Apr 27, 2011	EF4	100 km	40.2 mi	4
Apr 3, 1974	EF4	88 km	18.8 mi	7
Apr 3, 1974	EF4	82 km	24.0 mi	4
May 2, 1953	EF4	39 km	4.2 mi	4
Nov 30, 2016	EF3	70 km	4.6 mi	2
Jul 27, 2014	EF3	96 km	4.7 mi	0
Mar 2, 2012	EF3	92 km	41.0 mi	0
Mar 23, 2011	EF3	15 km	5.8 mi	0
Nov 10, 2002	EF3	68 km	12.2 mi	4
Nov 10, 2002	EF3	43 km	8.3 mi	7
Mar 29, 1997	EF3	74 km	4.0 mi	0
May 18, 1995	EF3	74 km	9.0 mi	0
Apr 15, 1994	EF3	67 km	15.0 mi	1
Feb 21, 1993	EF3	29 km	19.0 mi	0
Feb 21, 1993	EF3	40 km	16.0 mi	0
Feb 21, 1993	EF3	17 km	30.0 mi	1
Feb 6, 1986	EF3	63 km	10.0 mi	0
Apr 8, 1974	EF3	34 km	2.0 mi	0
Apr 3, 1974	EF3	80 km	18.1 mi	1

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

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: ROUGH RIDGE (27,610 acres, 2016).

Year	Name	Acres Burned	Distance
2016	ROUGH RIDGE	27,610	87 km
2016	CHIMNEY TOPS 2	14,998	81 km
2016	TELLICO	14,172	85 km
1987	UNNAMED	11,663	61 km
2016	STINKING CREEK	10,768	88 km
1987	UNNAMED	10,327	97 km
2016	BOTELER	8,626	95 km
2024	RX - T26 BRUSHY RIDGE	8,324	45 km
2000	UNNAMED	8,064	68 km
2016	MAPLE SPRINGS	7,696	53 km
2001	SHARP	6,039	87 km
1987	UNNAMED	5,973	83 km
2000	UNNAMED	5,371	55 km
2024	RX - T10 MILLER RIDGE	5,154	37 km
2003	UNNAMED	4,675	42 km
2024	RX - O63 CHESTNUT MTN	4,570	76 km
2013	BEAVER DAM	4,336	53 km
1987	UNNAMED	4,194	97 km
2021	UNNAMED	3,888	38 km
1987	UNNAMED	3,854	75 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	38°F (4°C)	4.7 in	Coldest
February	41°F (5°C)	4.3 in
March	49°F (9°C)	5.6 in	Wettest
April	57°F (14°C)	4.1 in
May	65°F (18°C)	4.7 in
June	73°F (23°C)	3.9 in
July	79°F (26°C)	5.1 in	Warmest
August	76°F (24°C)	3.8 in
September	70°F (21°C)	3.7 in
October	58°F (15°C)	3.2 in	Driest
November	49°F (9°C)	4.4 in
December	40°F (5°C)	5.0 in

Philadelphia has a seasonal temperature swing of 40°F / from 38°F in January to 79°F in July. Total annual precipitation is 52.6 inches, with March being the wettest month (5.6") and October the driest (3.2").

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