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Weather & Climate in Byram, MS
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Byram enjoys a temperate climate with an average annual temperature of 66°F (19°C). Winters average 47°F in January while summers reach 83°F in July. The area gets 304 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 51.3 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 279 feet.
Temperature
47°F Jan (9°C)
83°F Jul (28°C)
| Annual Average | 66.0°F |
| 22% above US avg | |
| January Average | 47°F (9°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 304 days/yr |
Geography
| Elevation | 279 ft (85 m) |
| Area | 18.6 sq mi (48.3 km²) |
| Population Density | 630/sq mi |
| Coordinates | 32.1921°N, 90.2870°W |
| Timezone | America/Chicago |
| County | Hinds County County |
| Nearest Airport | Jackson-Medgar Wiley Evers International (JAN) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 94.3 / 100 |
| Social Vulnerability | 80.1 / 100 |
| Community Resilience | 80.5 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very High |
| Strong Wind | Very High |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Very High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.7.
| Jan 8, 2019 | 8 km WNW of Hollandale, Mississippi | M3.7 | 127 km | 16 km |
| May 3, 2015 | 7 km SSW of Canton, Mississippi | M3.2 | 45 km | 5 km |
| Jun 29, 2015 | 6 km SSW of Canton, Mississippi | M3.2 | 46 km | 5 km |
| May 3, 2015 | 8 km WSW of Canton, Mississippi | M3.0 | 46 km | 5 km |
| Mar 15, 2025 | 5 km NNE of Magee, Mississippi | M3.0 | 63 km | 10 km |
| Aug 9, 2019 | Mississippi | M2.8 | 45 km | 5 km |
| Aug 17, 2015 | 9 km N of Madison, Mississippi | M2.6 | 42 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
11 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Francine | Category 1 | 81 mph | 294 km |
| 2021 | Ida | Category 4 | 121 mph | 184 km |
| 2020 | Laura | Category 4 | 150 mph | 266 km |
| 2020 | Zeta | Category 2 | 98 mph | 158 km |
| 2017 | Nate | Category 1 | 75 mph | 234 km |
| 2008 | Gustav | Category 2 | 98 mph | 260 km |
| 2005 | Katrina | Category 3 | 127 mph | 90 km |
| 2004 | Ivan | Category 3 | 121 mph | 260 km |
| 1998 | Georges | Category 2 | 104 mph | 221 km |
| 1992 | Andrew | Category 3 | 115 mph | 231 km |
| 1985 | Elena | Category 3 | 121 mph | 172 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
975 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 288 fatalities, 3,667 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 3, 1966 | EF5 | 25 km | 202.5 mi | 58 |
| Dec 5, 1953 | EF5 | 60 km | 9.0 mi | 38 |
| Mar 24, 2023 | EF4 | 98 km | 59.2 mi | 17 |
| Apr 12, 2020 | EF4 | 95 km | 67.4 mi | 7 |
| Apr 27, 2011 | EF4 | 76 km | 122.0 mi | 7 |
| Apr 24, 2010 | EF4 | 98 km | 149.0 mi | 10 |
| Nov 24, 2001 | EF4 | 28 km | 11.5 mi | 2 |
| Nov 22, 1992 | EF4 | 82 km | 40.0 mi | 0 |
| Nov 21, 1992 | EF4 | 25 km | 128.0 mi | 12 |
| Apr 18, 1978 | EF4 | 73 km | 19.1 mi | 4 |
| Mar 29, 1976 | EF4 | 57 km | 126.5 mi | 0 |
| Mar 29, 1976 | EF4 | 44 km | 22.3 mi | 3 |
| Mar 26, 1976 | EF4 | 52 km | 18.5 mi | 0 |
| Feb 21, 1971 | EF4 | 89 km | 202.1 mi | 58 |
| Feb 21, 1971 | EF4 | 44 km | 65.2 mi | 13 |
| Jan 23, 1969 | EF4 | 92 km | 117.8 mi | 32 |
| Dec 2, 1967 | EF4 | 83 km | 7.6 mi | 2 |
| Jun 18, 2023 | EF3 | 96 km | 6.5 mi | 1 |
| Apr 12, 2020 | EF3 | 93 km | 83.2 mi | 0 |
| Dec 16, 2019 | EF3 | 73 km | 18.6 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: BIEN 75-78 (4,658 acres, 2014).
| Year | Name | Acres Burned | Distance |
| 2014 | BIEN 75-78 | 4,658 | 72 km |
| 2021 | BIENVILLE - CPT 38-39-40 | 4,545 | 67 km |
| 2018 | UNNAMED | 4,007 | 70 km |
| 2010 | COMP 222-223-224 | 3,745 | 73 km |
| 2017 | UNNAMED | 3,547 | 70 km |
| 2021 | HOMOCHITTO - BB 7 | 3,028 | 79 km |
| 2010 | BIEN 1-4 | 2,983 | 70 km |
| 2017 | UNNAMED | 2,935 | 73 km |
| 2016 | UNNAMED | 2,802 | 79 km |
| 2021 | BIENVILLE CPT 1-4 | 2,761 | 70 km |
| 2022 | BIENVILLE CPT 203/205 | 2,731 | 98 km |
| 2014 | UNNAMED | 2,444 | 94 km |
| 2019 | UNNAMED | 2,436 | 71 km |
| 2013 | UNNAMED | 2,388 | 69 km |
| 2022 | 508 | 2,386 | 70 km |
| 2022 | BIENVILLE CPT 89/90 | 2,341 | 90 km |
| 2021 | BIENVILLE - CPT 76/77 | 2,246 | 73 km |
| 2013 | BIEN 42-46 55 | 2,215 | 74 km |
| 2014 | UNNAMED | 2,128 | 72 km |
| 2018 | UNNAMED | 2,094 | 73 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 47°F (9°C) | 5.5 in | Coldest |
| February | 49°F (10°C) | 4.9 in | |
| March | 57°F (14°C) | 6.1 in | Wettest |
| April | 64°F (18°C) | 5.6 in | |
| May | 72°F (22°C) | 5.1 in | |
| June | 78°F (26°C) | 3.7 in | |
| July | 83°F (28°C) | 4.5 in | Warmest |
| August | 81°F (27°C) | 3.7 in | |
| September | 76°F (24°C) | 3.4 in | Driest |
| October | 65°F (18°C) | 3.5 in | |
| November | 55°F (13°C) | 4.8 in | |
| December | 48°F (9°C) | 6.0 in |
Byram has a seasonal temperature swing of 35°F / from 47°F in January to 83°F in July. Total annual precipitation is 56.7 inches, with March being the wettest month (6.1") and September the driest (3.4").