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Weather & Climate in Folsom, LA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Folsom enjoys a temperate climate with an average annual temperature of 67°F (19°C). Winters average 51°F in January while summers reach 81°F in July. The area gets 313 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 62.5 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 149 feet.
Temperature
51°F Jan (10°C)
81°F Jul (27°C)
| Annual Average | 67.0°F |
| 24% above US avg | |
| January Average | 51°F (10°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 313 days/yr |
Geography
| Elevation | 149 ft (45 m) |
| Area | 1.7 sq mi (4.3 km²) |
| Population Density | 363/sq mi |
| Coordinates | 30.6324°N, 90.1961°W |
| Timezone | America/Chicago |
| County | Tangipahoa Parish County |
| Nearest Airport | Louis Armstrong New Orleans International (MSY) 44 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.3 / 100 |
| Social Vulnerability | 73.2 / 100 |
| Community Resilience | 65.8 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively High |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.0.
| Aug 2, 2010 | 16 km ESE of Clinton, Louisiana | M3.0 | 66 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
25 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Francine | Category 2 | 104 mph | 133 km |
| 2021 | Ida | Category 4 | 150 mph | 58 km |
| 2020 | Zeta | Category 3 | 115 mph | 56 km |
| 2020 | Delta | Category 2 | 98 mph | 266 km |
| 2020 | Sally | Category 2 | 109 mph | 235 km |
| 2019 | Barry | Category 1 | 75 mph | 221 km |
| 2017 | Nate | Category 1 | 86 mph | 118 km |
| 2012 | Isaac | Category 1 | 81 mph | 140 km |
| 2009 | Ida | Category 1 | 86 mph | 278 km |
| 2008 | Gustav | Category 2 | 109 mph | 148 km |
| 2005 | Katrina | Category 4 | 144 mph | 68 km |
| 2005 | Dennis | Category 3 | 121 mph | 278 km |
| 2005 | Cindy | Category 1 | 75 mph | 160 km |
| 2004 | Ivan | Category 4 | 127 mph | 225 km |
| 2002 | Lili | Category 3 | 121 mph | 214 km |
| 1998 | Georges | Category 2 | 109 mph | 124 km |
| 1998 | Earl | Category 2 | 98 mph | 294 km |
| 1997 | Danny | Category 1 | 81 mph | 147 km |
| 1995 | Opal | Category 4 | 127 mph | 287 km |
| 1995 | Erin | Category 1 | 86 mph | 258 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
746 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 37 fatalities, 1,038 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 19, 2020 | EF4 | 54 km | 53.8 mi | 1 |
| Apr 12, 2020 | EF4 | 72 km | 21.2 mi | 4 |
| Dec 6, 1983 | EF4 | 70 km | 7.0 mi | 0 |
| Jan 10, 1975 | EF4 | 69 km | 56.5 mi | 9 |
| Mar 22, 2022 | EF3 | 84 km | 11.5 mi | 1 |
| Apr 12, 2020 | EF3 | 83 km | 83.2 mi | 0 |
| Dec 16, 2019 | EF3 | 91 km | 29.3 mi | 0 |
| Feb 7, 2017 | EF3 | 68 km | 6.4 mi | 0 |
| Feb 7, 2017 | EF3 | 72 km | 10.1 mi | 0 |
| Jan 21, 2017 | EF3 | 92 km | 31.1 mi | 4 |
| Dec 23, 2014 | EF3 | 75 km | 12.5 mi | 3 |
| Dec 25, 2012 | EF3 | 49 km | 60.3 mi | 0 |
| May 26, 2011 | EF3 | 14 km | 6.1 mi | 0 |
| Nov 15, 2006 | EF3 | 96 km | 13.0 mi | 0 |
| Nov 21, 1992 | EF3 | 93 km | 27.0 mi | 0 |
| Aug 25, 1992 | EF3 | 67 km | 9.0 mi | 2 |
| Oct 14, 1984 | EF3 | 91 km | 16.0 mi | 0 |
| Mar 20, 1983 | EF3 | 41 km | 2.0 mi | 0 |
| May 19, 1980 | EF3 | 84 km | 13.1 mi | 0 |
| Dec 13, 1977 | EF3 | 63 km | 20.4 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: THICK CREEK (3,960 acres, 2007).
| Year | Name | Acres Burned | Distance |
| 2007 | THICK CREEK | 3,960 | 85 km |
| 2006 | KILN (BAYOU BACON) | 3,576 | 70 km |
| 2014 | UNNAMED | 3,345 | 99 km |
| 2006 | SANDY FOX FIRE | 3,167 | 87 km |
| 2014 | UNNAMED | 3,011 | 96 km |
| 2010 | DESOTO 1050 | 2,485 | 91 km |
| 2013 | UNNAMED | 2,428 | 92 km |
| 2013 | UNNAMED | 2,382 | 90 km |
| 2020 | DE SOTO - BB 6317 | 2,097 | 92 km |
| 2008 | UNNAMED | 2,039 | 100 km |
| 2000 | UNIT 1 B | 2,030 | 65 km |
| 2006 | UNNAMED | 1,984 | 62 km |
| 2022 | DE SOTO BB 8359 NORTH 9365 SOUTH | 1,823 | 91 km |
| 2018 | UNNAMED | 1,755 | 90 km |
| 1998 | UNIT 4 CD | 1,729 | 42 km |
| 2015 | BAYOU LACROIX | 1,714 | 76 km |
| 2010 | DESOTO 1009 | 1,666 | 91 km |
| 2009 | SLIDELL AIRPORT | 1,663 | 44 km |
| 2020 | UNNAMED | 1,624 | 91 km |
| 1998 | UNIT 7 | 1,623 | 47 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 51°F (10°C) | 5.7 in | Coldest |
| February | 53°F (12°C) | 5.7 in | |
| March | 60°F (16°C) | 6.1 in | |
| April | 66°F (19°C) | 5.5 in | |
| May | 73°F (23°C) | 5.5 in | |
| June | 79°F (26°C) | 5.0 in | |
| July | 81°F (27°C) | 6.4 in | Wettest |
| August | 81°F (27°C) | 5.8 in | Warmest |
| September | 77°F (25°C) | 4.8 in | |
| October | 67°F (20°C) | 3.4 in | Driest |
| November | 58°F (15°C) | 4.9 in | |
| December | 52°F (11°C) | 5.6 in |
Folsom has a seasonal temperature swing of 30°F / from 51°F in January to 81°F in August. Total annual precipitation is 64.3 inches, with July being the wettest month (6.4") and October the driest (3.4").