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Weather & Climate in Duncan, MS
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Duncan enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 41°F in January while summers reach 81°F in July. The area gets 301 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 55.9 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 158 feet.
Temperature
41°F Jan (5°C)
81°F Jul (27°C)
| Annual Average | 62.4°F |
| 16% above US avg | |
| January Average | 41°F (5°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 301 days/yr |
Geography
| Elevation | 158 ft (48 m) |
| Area | 0.9 sq mi (2.4 km²) |
| Population Density | 388/sq mi |
| Coordinates | 34.0418°N, 90.7459°W |
| Timezone | America/Chicago |
| County | Coahoma County County |
| Nearest Airport | Pinebluff Regional/Grider Field (PBF) 69 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 62.5 / 100 |
| Social Vulnerability | 94.8 / 100 |
| Community Resilience | 74.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
17 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Oct 29, 2012 | 8 km SW of Parkin, Arkansas | M3.9 | 130 km | 21 km |
| Jan 8, 2019 | 8 km WNW of Hollandale, Mississippi | M3.7 | 95 km | 16 km |
| Oct 26, 2002 | 3 km SE of Alligator, Mississippi | M3.1 | 5 km | 3 km |
| Aug 11, 1996 | 9 km WSW of Shaw, Mississippi | M3.1 | 53 km | 10 km |
| Feb 25, 1999 | 10 km NE of Oakland, Mississippi | M2.8 | 83 km | 5 km |
| Aug 11, 2002 | 8 km ESE of Darling, Mississippi | M2.8 | 61 km | 4 km |
| Feb 11, 1991 | 10 km SSW of Clarksdale, Mississippi | M2.7 | 15 km | 12 km |
| Jan 3, 1993 | 4 km SW of Sunset, Arkansas | M2.7 | 136 km | 17 km |
| Jul 9, 2000 | 10 km WNW of Wynne, Arkansas | M2.6 | 137 km | 18 km |
| May 18, 1997 | 2 km WNW of Patterson, Arkansas | M2.6 | 144 km | 5 km |
| Apr 11, 1996 | 9 km ENE of Biscoe, Arkansas | M2.6 | 104 km | 7 km |
| Oct 18, 2009 | 9 km SE of Redfield, Arkansas | M2.6 | 131 km | 29 km |
| Jun 25, 2016 | 2 km SSE of Jericho, Arkansas | M2.5 | 144 km | 8 km |
| Oct 20, 1999 | 8 km NE of Clarendon, Arkansas | M2.5 | 93 km | 9 km |
| Apr 6, 2007 | 6 km NW of Earle, Arkansas | M2.5 | 144 km | 13 km |
| Sep 2, 2013 | 0 km SW of Jericho, Arkansas | M2.5 | 146 km | 12 km |
| Nov 9, 2009 | 3 km SE of Marion, Arkansas | M2.5 | 139 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2005 | Katrina | Category 1 | — | 269 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
409 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 24 fatalities, 498 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 24, 2001 | EF4 | 72 km | 30.3 mi | 0 |
| Apr 17, 1978 | EF4 | 68 km | 3.6 mi | 0 |
| Dec 23, 2015 | EF3 | 6 km | 61.6 mi | 2 |
| May 10, 2008 | EF3 | 92 km | 14.1 mi | 0 |
| Feb 24, 2007 | EF3 | 99 km | 29.1 mi | 0 |
| Nov 24, 2001 | EF3 | 91 km | 5.0 mi | 0 |
| Feb 24, 2001 | EF3 | 75 km | 42.0 mi | 0 |
| Feb 24, 2001 | EF3 | 83 km | 22.0 mi | 0 |
| Jan 21, 1999 | EF3 | 86 km | 16.0 mi | 0 |
| Dec 21, 1990 | EF3 | 80 km | 3.5 mi | 0 |
| Nov 19, 1988 | EF3 | 25 km | 4.0 mi | 0 |
| May 14, 1983 | EF3 | 88 km | 0.8 mi | 0 |
| Apr 24, 1976 | EF3 | 27 km | 24.6 mi | 0 |
| Nov 24, 1973 | EF3 | 65 km | 0.1 mi | 0 |
| Nov 20, 1973 | EF3 | 76 km | 11.9 mi | 0 |
| Apr 21, 1972 | EF3 | 85 km | 12.8 mi | 0 |
| Feb 21, 1971 | EF3 | 30 km | 8.6 mi | 3 |
| Nov 19, 1970 | EF3 | 85 km | 8.0 mi | 0 |
| Feb 9, 1965 | EF3 | 74 km | 10.5 mi | 0 |
| Feb 9, 1965 | EF3 | 76 km | 2.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (2,376 acres, 2016).
| Year | Name | Acres Burned | Distance |
| 2016 | UNNAMED | 2,376 | 93 km |
| 2024 | HOLLY SPRINGS IU 130-1 RX | 1,839 | 93 km |
| 2021 | HOLLY SPRINGS - BB 123 124 | 1,761 | 88 km |
| 2018 | UNNAMED | 1,760 | 88 km |
| 2010 | COMP 139 | 1,671 | 87 km |
| 2024 | HOLLY SPRINGS IU 127-1 128-1 RX | 1,353 | 90 km |
| 2006 | UNNAMED | 1,334 | 64 km |
| 2010 | COMP 134 | 1,257 | 88 km |
| 2021 | HOLLY SPRINGS BB 127/128 | 1,231 | 90 km |
| 2024 | HOLLY SPRINGS CPT 123124 RX | 1,216 | 88 km |
| 2022 | HOLLY SPRINGS BB 130/136 | 1,129 | 93 km |
| 2010 | COMP 135 | 1,063 | 92 km |
| 2015 | UNNAMED | 981 | 88 km |
| 2013 | C-132 | 889 | 87 km |
| 2022 | HOLLY SPRINGS BB 133 | 866 | 86 km |
| 2017 | 310 WEST OF COMO | 745 | 81 km |
| 1993 | UNNAMED | 651 | 79 km |
| 1996 | UNNAMED | 647 | 83 km |
| 2018 | UNNAMED | 599 | 71 km |
| 2015 | UNNAMED | 579 | 92 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 4.5 in | Coldest |
| February | 45°F (7°C) | 4.7 in | |
| March | 54°F (12°C) | 5.7 in | Wettest |
| April | 63°F (17°C) | 5.3 in | |
| May | 71°F (22°C) | 5.3 in | |
| June | 79°F (26°C) | 4.4 in | |
| July | 81°F (27°C) | 4.1 in | Warmest |
| August | 80°F (27°C) | 2.7 in | Driest |
| September | 75°F (24°C) | 3.2 in | |
| October | 64°F (18°C) | 3.4 in | |
| November | 53°F (12°C) | 5.3 in | |
| December | 45°F (7°C) | 5.5 in |
Duncan has a seasonal temperature swing of 40°F / from 41°F in January to 81°F in July. Total annual precipitation is 54.0 inches, with March being the wettest month (5.7") and August the driest (2.7").