Weldon Spring, MO

Full City Profile · Missouri

4.7 /5.0
A+ Excellent
5,291 Population 692/sq mi density
$155,081 Median Income $79,258 per capita
$523,300 Home Value $639,567 Zillow
$2,692 Median Rent 34.4% income on rent
56°F Avg Temperature
A+
Overall
4.7 / 5.0
Strong
A
Economy
4.4 / 5.0
$155,081 median income, 5.7% unemployment
A+
Affordability
4.8 / 5.0
$523,300 home value, $2,692/mo rent
A+
Education
5.0 / 5.0
53.4% bachelor's degree or higher
Weldon Spring enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 32°F in January while summers reach 79°F in July. Annual precipitation totals 39.8 inches. The area receives 13.5 inches of snow annually.

Temperature

32°F Jan (-0°C) 79°F Jul (26°C)
Annual Average56.1°F
4% above US avg
January Average32°F (-0°C)
July Average79°F (26°C)

Geography

Elevation551 ft (168 m)
Area7.7 sq mi (19.8 km²)
Population Density692/sq mi
Coordinates38.7134°N, 90.6893°W
TimezoneAmerica/Chicago
Nearest AirportSt Louis Lambert International (STL)
17 miles away

Precipitation & Snow

Annual Rainfall 39.8"
5% above US avg
Snowfall 13.5"
Wettest Month (Apr) 4.58"
Driest Month (Feb) 1.98"

Air Quality

Earthquake History

31 earthquakes (M2.5+) within 150 km since 1990. Strongest: M3.9. Most recent: M2.6 on Sep 19, 2024.

Jun 7, 2011 18 km NNW of Potosi, Missouri M3.9 73 km
Mar 2, 1990 9 km NW of Vernon, Illinois M3.4 133 km
Aug 27, 1993 5 km SSE of Olympian Village, Missouri M3.3 73 km
Apr 6, 1994 2 km NE of Tamaroa, Illinois M3.2 143 km
Jan 29, 1993 7 km WNW of Brownstown, Illinois M3.2 148 km
Jul 1, 2017 9 km SSE of Mulberry Grove, Illinois M3.1 128 km
Jul 8, 2003 1 km N of Leasburg, Missouri M2.9 86 km
Sep 5, 1995 3 km N of Woodlawn, Illinois M2.9 149 km
May 18, 2006 9 km SSE of De Soto, Missouri M2.9 75 km
Feb 8, 2004 6 km SSW of Stoutsville, Missouri M2.9 135 km
Apr 29, 2022 1 km SSW of Peerless Park, Missouri M2.8 26 km
Mar 28, 2024 1 km NNE of Germantown, Illinois M2.8 102 km
Aug 26, 1992 5 km W of Frohna, Missouri M2.8 148 km
Jul 31, 1995 8 km SSW of Caledonia, Missouri M2.8 114 km
Sep 13, 1997 3 km SSE of Darmstadt, Illinois M2.8 97 km
May 5, 2008 3 km SSE of Fenton, Missouri M2.8 35 km
Jul 15, 1990 7 km SW of Potosi, Missouri M2.7 94 km
Nov 12, 1996 15 km SSE of Olympian Village, Missouri M2.7 83 km
Jun 16, 1993 2 km SE of Longtown, Missouri M2.7 144 km
Jul 22, 1998 12 km NE of Mine La Motte, Missouri M2.7 122 km
Source: USGS (M2.5+, 1990-2025)

Tornado History

533 tornadoes (EF0+) within 100 km since 1950. Strongest: EF4. Total: 57 fatalities, 1,073 injuries.

Date Rating Distance Fatalities
Apr 22, 2011 EF4 18 km 0
Apr 3, 1981 EF4 49 km 0
Jun 22, 1969 EF4 92 km 2
Jan 24, 1967 EF4 13 km 3
Feb 10, 1959 EF4 22 km 21
Feb 24, 1956 EF4 36 km 6
Dec 10, 2021 EF3 55 km 6
Dec 10, 2021 EF3 23 km 1
May 31, 2013 EF3 48 km 0
May 31, 2013 EF3 6 km 0
Dec 31, 2010 EF3 31 km 1
Mar 13, 2006 EF3 57 km 0
Mar 13, 2006 EF3 70 km 0
Mar 11, 2006 EF3 73 km 0
Nov 15, 1988 EF3 61 km 0
Nov 15, 1988 EF3 10 km 0
Apr 29, 1984 EF3 33 km 0
May 1, 1983 EF3 48 km 0
May 1, 1983 EF3 75 km 0
Dec 2, 1982 EF3 89 km 2
Source: NOAA SPC (EF0+, 1950-2024)

Wildfire History

14 wildfires (100+ acres) within 100 km. Largest: SMITH MILL HOLLOW (3,978 ac, 2022).

Year Name Acres Distance
2022 SMITH MILL HOLLOW 3,978 89 km
2019 UNNAMED 2,688 89 km
2004 CICERO CREEK 1,846 81 km
2021 BERRYMAN BLOCK B AND C 1,728 92 km
2024 HARMON SPRING RX 1,330 87 km
2018 UNNAMED 1,285 87 km
2024 RENAULT 1,085 98 km
2024 FLATWOODS RX 796 90 km
2022 NORTH KOFFER HOLLOW 783 90 km
1989 UNNAMED 600 88 km
2024 PIGEON ROOST 583 96 km
2000 UNNAMED 549 84 km
1992 UNNAMED 533 95 km
1997 FLATWOODS 530 90 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 32°F (-0°C) 2.4 in Coldest
February 36°F (2°C) 2.0 in Driest
March 46°F (8°C) 3.5 in
April 56°F (14°C) 4.6 in Wettest
May 66°F (19°C) 4.6 in
June 75°F (24°C) 4.3 in
July 79°F (26°C) 3.3 in Warmest
August 77°F (25°C) 3.4 in
September 69°F (20°C) 3.0 in
October 57°F (14°C) 3.1 in
November 45°F (7°C) 3.3 in
December 36°F (2°C) 2.3 in

Weldon Spring has a seasonal temperature swing of 47°F / from 32°F in January to 79°F in July. Total annual precipitation is 39.8 inches, with April being the wettest month (4.6") and February the driest (2.0").

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