Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Glen Lyn experiences four distinct seasons with an average annual temperature of 53°F (11°C). Winters average 33°F in January while summers reach 72°F in July. The area gets 305 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 42.2 inches. The area receives 22.7 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 35. The city sits at an elevation of 1,510 feet.
Temperature
33°F Jan (0°C)72°F Jul (22°C)
Annual Average
52.6°F
3% below US avg
January Average
33°F (0°C)
July Average
72°F (22°C)
Sunny Days
305 days/yr
Geography
Elevation
1,510 ft (460 m)
Area
0.7 sq mi (1.9 km²)
Population Density
108/sq mi
Coordinates
37.3727°N, 80.8589°W
Timezone
America/New_York
County
Giles County County
Nearest Airport
Roanoke/Blacksburg Regional (Woodrum Field) (ROA) 49 miles away
Precipitation & Snow
Annual Rainfall42.2"
11% above US avg
Snowfall22.7"
Wettest Month (Jul)4.17"
Driest Month (Jan)2.60"
Air Quality
AQI Median
35.0
Rating
Good
Natural Hazard Risk
Overall Risk
Very Low
Risk Score
16.6 / 100
Social Vulnerability
62.8 / 100
Community Resilience
53.6 / 100
Hazard Breakdown
Tornado
Very Low
Hurricane
Very Low
Earthquake
Very Low
Wildfire
Very Low
Flood
Relatively Low
Hail
Very Low
Strong Wind
Relatively Low
Heat Wave
No Rating
Winter Weather
Relatively Low
Lightning
Relatively Low
Ice Storm
Very Low
Drought
Very Low
Cold Wave
Relatively Low
Landslide
Relatively Moderate
Avalanche
Relatively Low
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
40 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M3.5.
Apr 22, 1991
14 km ESE of Falling Spring, West Virginia
M3.5
86 km
15 km
Feb 12, 1994
10 km NNW of Abingdon, Virginia
M3.4
120 km
5 km
Apr 4, 2010
14 km SW of Gassaway, West Virginia
M3.4
137 km
0 km
Mar 31, 2013
West Virginia
M3.4
142 km
8 km
Jun 26, 1995
6 km NNW of Trout Dale, Virginia
M3.4
88 km
2 km
Sep 13, 2017
11 km NE of Peterstown, West Virginia
M3.2
18 km
18 km
Dec 4, 2001
9 km W of Alderson, West Virginia
M3.1
40 km
9 km
May 16, 2009
2 km NNE of Cave Spring, Virginia
M3.0
77 km
13 km
Jun 28, 1991
4 km ENE of Pratt, West Virginia
M3.0
104 km
7 km
Jul 7, 1995
3 km NW of Mountain City, Tennessee
M3.0
131 km
10 km
Jan 22, 1995
0 km WNW of Pulaski, Virginia
M2.9
36 km
9 km
Aug 14, 2009
4 km ENE of Nickelsville, Virginia
M2.9
150 km
16 km
Jul 4, 2009
3 km E of Narrows, Virginia
M2.8
9 km
0 km
Feb 15, 2005
12 km NNW of Raven, Virginia
M2.8
96 km
11 km
Jan 10, 2012
14 km WNW of Birch River, West Virginia
M2.8
133 km
0 km
Jul 15, 2021
10 km S of Narrows, Virginia
M2.8
15 km
20 km
May 12, 2017
6 km SSW of Narrows, Virginia
M2.8
11 km
4 km
Jul 6, 2023
5 km S of Hillsville, Virginia
M2.7
74 km
0 km
Aug 18, 2000
2 km SSE of Narrows, Virginia
M2.7
83 km
10 km
Aug 30, 2010
7 km ENE of Mountain City, Tennessee
M2.7
125 km
11 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 1.
Year
Name
Category
Max Wind
Closest
2003
Isabel
Category 1
75 mph
290 km
1989
Hugo
Category 1
—
298 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
70 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF3. Total: 1 fatality, 74 injuries.
Date
Rating
Distance
Path
Fatalities
Apr 4, 1974
EF3
50 km
32.2 mi
1
Apr 4, 1974
EF3
49 km
9.2 mi
0
Apr 2, 2024
EF2
80 km
5.3 mi
0
Mar 23, 2022
EF2
79 km
1.9 mi
0
Oct 7, 2014
EF2
40 km
3.0 mi
0
Apr 8, 2011
EF2
36 km
1.9 mi
0
May 8, 2009
EF2
92 km
4.9 mi
0
Sep 17, 2004
EF2
96 km
3.0 mi
0
Jun 22, 1990
EF2
45 km
5.0 mi
0
May 26, 1990
EF2
92 km
0.5 mi
0
Aug 21, 1977
EF2
77 km
1.0 mi
0
Jul 11, 1976
EF2
36 km
4.1 mi
0
Apr 24, 1975
EF2
57 km
6.0 mi
0
Apr 4, 1974
EF2
74 km
6.5 mi
0
Apr 12, 1965
EF2
22 km
0.1 mi
0
Apr 8, 1965
EF2
15 km
0.5 mi
0
Feb 25, 1961
EF2
72 km
3.0 mi
0
May 17, 1953
EF2
78 km
1.0 mi
0
May 26, 2024
EF1
71 km
2.0 mi
0
Jul 5, 2022
EF1
86 km
2.2 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km.
Largest: KAYFORD MOUNTAIN (31,509 acres, 1991).
Year
Name
Acres Burned
Distance
1991
KAYFORD MOUNTAIN
31,509
84 km
1987
ELLIS CREEK
24,070
80 km
1991
BROWNS BRANCH
17,324
89 km
1991
HUFF CREEK
15,190
89 km
1991
ROLLINS BRANCH
14,435
80 km
1991
GAULEY MTN
13,113
92 km
1991
TOMS BRANCH
11,849
93 km
2012
ALLEGHANY TUNNELS FIRES
11,055
76 km
1991
BRUSHY FORK
10,704
82 km
1991
CANEBRAKE
8,152
98 km
1987
RICK CREEK ROAD
7,740
91 km
2012
BARBOURS CREEK.
7,244
72 km
1991
MUD LICK CREEK
7,111
91 km
1991
PEACHTREE
6,635
77 km
1991
CARBANATE
6,533
97 km
1987
SAMS BRANCH
5,872
48 km
1987
TUCKER HOLLOW
5,862
95 km
1991
ELSIE CREEK
5,771
90 km
1987
DAVIN CREEK
5,265
94 km
1991
BRADSHAW
5,029
83 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
33°F (0°C)
2.6 in
Coldest, Driest
February
35°F (2°C)
2.7 in
March
43°F (6°C)
3.3 in
April
52°F (11°C)
3.3 in
May
60°F (15°C)
3.8 in
June
67°F (20°C)
3.3 in
July
72°F (22°C)
4.2 in
Warmest, Wettest
August
70°F (21°C)
3.5 in
September
64°F (18°C)
3.1 in
October
53°F (12°C)
3.0 in
November
44°F (7°C)
2.8 in
December
35°F (2°C)
2.8 in
Glen Lyn has a seasonal temperature swing of 39°F / from 33°F in January to 72°F in July. Total annual precipitation is 38.3 inches, with July being the wettest month (4.2") and January the driest (2.6").