Weather & Climate in Lyman, MS
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Lyman enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 52°F in January while summers reach 83°F in July. Annual precipitation totals 62.8 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 44. 66% of days have good air quality. The city sits at an elevation of 71 feet.
Temperature
52°F Jan (11°C)
83°F Jul (28°C)
| Annual Average | 68.3°F |
| 26% above US avg | |
| January Average | 52°F (11°C) |
| July Average | 83°F (28°C) |
Geography
| Elevation | 71 ft (22 m) |
| Area | 8.1 sq mi (20.9 km²) |
| Population Density | 263/sq mi |
| Coordinates | 30.5079°N, 89.1305°W |
| Timezone | America/Chicago |
| County | Harrison County County |
| Nearest Airport | Gulfport-Biloxi International (GPT) 8 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
| Good Days % | 66.2% |
| Unhealthy Days | 5 |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.6 / 100 |
| Social Vulnerability | 68.9 / 100 |
| Community Resilience | 66.2 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very High |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Very High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
3 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.5.
| Feb 18, 2011 | 22 km SSE of Dauphin Island, Alabama | M3.5 | 118 km | 5 km |
| Oct 18, 1997 | 69 km SSW of Dauphin Island, Alabama | M2.9 | 120 km | 1 km |
| Nov 10, 2012 | 16 km S of Dauphin Island, Alabama | M2.6 | 109 km | 11 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
22 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 | 198 km |
| 2021 | Ida | Category 4 | 150 mph | 154 km |
| 2020 | Zeta | Category 3 | 115 mph | 81 km |
| 2020 | Sally | Category 2 | 109 mph | 136 km |
| 2019 | Barry | Category 1 | 75 mph | 299 km |
| 2017 | Nate | Category 1 | 86 mph | 17 km |
| 2012 | Isaac | Category 1 | 81 mph | 177 km |
| 2009 | Ida | Category 1 | 86 mph | 227 km |
| 2008 | Gustav | Category 2 | 109 mph | 210 km |
| 2005 | Dennis | Category 4 | 138 mph | 178 km |
| 2005 | Katrina | Category 4 | 144 mph | 51 km |
| 2005 | Cindy | Category 1 | 75 mph | 173 km |
| 2004 | Ivan | Category 4 | 132 mph | 123 km |
| 1998 | Georges | Category 2 | 109 mph | 22 km |
| 1998 | Earl | Category 2 | 98 mph | 234 km |
| 1997 | Danny | Category 1 | 81 mph | 91 km |
| 1995 | Opal | Category 4 | 127 mph | 185 km |
| 1995 | Erin | Category 2 | 98 mph | 157 km |
| 1992 | Andrew | Category 4 | 144 mph | 245 km |
| 1988 | Florence | Category 1 | 81 mph | 137 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
575 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 20 fatalities, 471 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Feb 10, 2013 | EF4 | 92 km | 21.7 mi | 0 |
| Jan 21, 2017 | EF3 | 82 km | 31.1 mi | 4 |
| Dec 25, 2012 | EF3 | 55 km | 60.3 mi | 0 |
| May 26, 2011 | EF3 | 89 km | 6.1 mi | 0 |
| Apr 15, 2011 | EF3 | 84 km | 18.3 mi | 4 |
| Mar 20, 1983 | EF3 | 89 km | 1.0 mi | 0 |
| May 7, 1982 | EF3 | 87 km | 13.0 mi | 0 |
| May 19, 1980 | EF3 | 44 km | 13.1 mi | 0 |
| May 19, 1980 | EF3 | 15 km | 10.6 mi | 0 |
| May 19, 1980 | EF3 | 63 km | 4.3 mi | 0 |
| May 16, 1980 | EF3 | 15 km | 11.5 mi | 0 |
| Apr 13, 1980 | EF3 | 16 km | 15.9 mi | 0 |
| Mar 27, 1976 | EF3 | 68 km | 13.9 mi | 0 |
| Nov 3, 1968 | EF3 | 16 km | 2.0 mi | 0 |
| Oct 30, 1967 | EF3 | 15 km | 2.0 mi | 4 |
| Apr 18, 1966 | EF3 | 24 km | 23.8 mi | 0 |
| Feb 26, 1958 | EF3 | 94 km | 29.1 mi | 4 |
| Apr 18, 1950 | EF3 | 91 km | 14.0 mi | 0 |
| Apr 10, 2024 | EF2 | 72 km | 11.0 mi | 0 |
| Jun 19, 2023 | EF2 | 55 km | 2.4 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: WHITE DOG (12,306 acres, 2005).
| Year | Name | Acres Burned | Distance |
| 2005 | WHITE DOG | 12,306 | 68 km |
| 2008 | UNNAMED | 10,363 | 57 km |
| 2013 | UNNAMED | 10,170 | 61 km |
| 2014 | UNNAMED | 9,932 | 68 km |
| 2010 | DESOTO 0902 | 8,713 | 61 km |
| 2013 | UNNAMED | 7,660 | 30 km |
| 2010 | DESOTO 1057 | 7,148 | 32 km |
| 2015 | UNNAMED | 7,059 | 60 km |
| 2014 | UNNAMED | 6,802 | 61 km |
| 1993 | UNNAMED | 6,744 | 75 km |
| 2005 | UNNAMED | 6,712 | 72 km |
| 2000 | COW PEN | 6,502 | 68 km |
| 2010 | CRIPPLE CHINOOK | 6,035 | 67 km |
| 2005 | UNNAMED | 5,819 | 73 km |
| 2018 | UNNAMED | 5,803 | 62 km |
| 2010 | DESOTO 1064 | 5,695 | 29 km |
| 2008 | UNNAMED | 5,657 | 70 km |
| 1987 | MACHINE GUN | 5,601 | 67 km |
| 1990 | PIERCES CREEK | 5,544 | 66 km |
| 2020 | 369 D | 5,362 | 71 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 52°F (11°C) | 4.9 in | Coldest |
| February | 56°F (13°C) | 4.4 in | |
| March | 61°F (16°C) | 5.2 in | |
| April | 68°F (20°C) | 5.5 in | |
| May | 75°F (24°C) | 4.7 in | |
| June | 81°F (27°C) | 6.9 in | |
| July | 83°F (28°C) | 7.2 in | Warmest, Wettest |
| August | 83°F (28°C) | 6.5 in | |
| September | 79°F (26°C) | 5.2 in | |
| October | 70°F (21°C) | 3.7 in | Driest |
| November | 60°F (15°C) | 4.0 in | |
| December | 54°F (12°C) | 4.5 in |
Lyman has a seasonal temperature swing of 31°F / from 52°F in January to 83°F in July. Total annual precipitation is 62.8 inches, with July being the wettest month (7.2") and October the driest (3.7").