Jackson, Mississippi climate: Normal weather by month, frost dates and records
Jackson's normal year runs from 37°F January nights to 92°F July afternoons, with 57.4 inches of precipitation and 1 inch of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.6°C, January lows of 3°C, July highs of 33°C, 1,457 mm of precipitation a year.
- NOAA stationJackson International Airport
- Station IDUSW00003940
- Location32.32°N 90.08°W
- Elevation330 ft (101 m)
- From the center8 miles
- Population141,449
On October 22, the normal high in Jackson is 76°F and the normal low 52°F, and the chance of measurable rain or snow is 25%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Jackson.
- Jan 57° 37°
- Feb 62° 40°
- Mar 69° 46°
- Apr 77° 53°
- May 84° 62°
- Jun 90° 69°
- Jul 92° 72°
- Aug 92° 72°
- Sep 88° 66°
- Oct 78° 54°
- Nov 67° 44°
- Dec 60° 39°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Jackson each month?
July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 37°F. The most precipitation falls in April (5.84 in), the least in September (3.48 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 57°F | 37°F | 47.0°F | 5.42 | 0.2 | 10 | <1 | 12 | 10 h 10 min |
| February | 62°F | 40°F | 50.9°F | 5.10 | 0.2 | 10 | <1 | 8 | 11 h |
| March | 69°F | 46°F | 57.9°F | 5.68 | 0.1 | 10 | <1 | 3 | 12 h |
| April | 77°F | 53°F | 64.9°F | 5.84 | 0.0 | 9 | <1 | <1 | 13 h |
| May | 84°F | 62°F | 72.9°F | 4.36 | 0.0 | 9 | 5 | <1 | 13 h 50 min |
| June | 90°F | 69°F | 79.6°F | 4.43 | 0.0 | 10 | 18 | <1 | 14 h 20 min |
| July | 92°F | 72°F | 82.1°F | 5.02 | 0.0 | 11 | 24 | <1 | 14 h 10 min |
| August | 92°F | 72°F | 81.8°F | 4.69 | 0.0 | 11 | 23 | <1 | 13 h 20 min |
| September | 88°F | 66°F | 76.9°F | 3.48 | 0.0 | 7 | 13 | <1 | 12 h 20 min |
| October | 78°F | 54°F | 66.2°F | 3.80 | 0.0 | 7 | 2 | <1 | 11 h 30 min |
| November | 67°F | 44°F | 55.4°F | 4.40 | 0.0 | 9 | <1 | 5 | 10 h 30 min |
| December | 60°F | 39°F | 49.1°F | 5.13 | 0.5 | 10 | <1 | 11 | 10 h |
| Year (annual) | 76°F | 55°F | 65.4°F | 57.35 | 1.0 | 111 | 85 | 40 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 14°C | 3°C | 8.3°C | 138 mm | 1 cm |
| February | 17°C | 4°C | 10.5°C | 130 mm | 1 cm |
| March | 21°C | 8°C | 14.4°C | 144 mm | 0 cm |
| April | 25°C | 12°C | 18.3°C | 148 mm | 0 cm |
| May | 29°C | 17°C | 22.7°C | 111 mm | 0 cm |
| June | 32°C | 21°C | 26.4°C | 113 mm | 0 cm |
| July | 33°C | 22°C | 27.8°C | 128 mm | 0 cm |
| August | 33°C | 22°C | 27.7°C | 119 mm | 0 cm |
| September | 31°C | 19°C | 24.9°C | 88 mm | 0 cm |
| October | 26°C | 12°C | 19.0°C | 97 mm | 0 cm |
| November | 20°C | 6°C | 13.0°C | 112 mm | 0 cm |
| December | 15°C | 4°C | 9.5°C | 130 mm | 1 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003940; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Jackson?
Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, October has the fewest days with rain (7).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003940.
When is the last frost in Jackson?
In Jackson, the last spring frost (32°F) comes after March 14 in half of years and after April 2 in one year in ten; the first autumn frost comes before November 14 in half of years and before October 31 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 141 year in 10 after April 2; 9 in 10 after February 22
- First autumn frost, half of years before
- November 141 year in 10 before October 31; 9 in 10 before December 4
NOAA puts the median frost-free season at 245 days, and the season without a hard freeze (28°F) at 276 days.
A hard freeze (28°F) comes after February 28 in half of springs and before November 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Jackson in zone 8b across its 12 ZIP code areas (8b in 39212, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Jackson's NOAA station is in zone 8b: the coldest night of a typical year reaches 18°F (30 complete years).
Frost dates for every NOAA station in Mississippi · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00003940; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Jackson ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Jackson's 12 ZIP code areas are all in zone 8b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Jackson?
In a normal year in Jackson, 85 days a year reach 90°F (3 of them 100°F or more), 40 nights fall to 32°F or colder and 111 days bring measurable precipitation.
- Days at 90°F or more
- 85a normal year
- Days at 100°F or more
- 3a normal year
- Nights at 32°F or colder
- 40a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 111a normal year
- Days with 1 inch of snow or more
- fewer than 1a normal year
The highest temperature in Jackson's official record (kept by the National Weather Service since 1896) is 107°F, on July 29, 1930; the lowest is −5°F, on January 27, 1940.
The wettest calendar year on that record is 1979, with 92.75 in; the snowiest season is 1939–40, with 10.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00003940; records: ACIS (NOAA Regional Climate Centers), NWS threaded record JANthr. Records use complete months only; a month missing more than three days is left out.
How humid and windy is Jackson, and how clear are its skies?
The summer (June-August) dew point averages 70°F. The muggiest month is July, with an average dew point of 72°F, above the 65°F at which most people call the air sticky; the driest air comes in January (37°F). February is the windiest month (7.5 mph on average), and September has the most clear or nearly clear hours (69%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 37°F | 69% | 48% | 6.7 mph | 51% | 36% |
| February | 42°F | 67% | 45% | 7.5 mph | 50% | 36% |
| March | 50°F | 67% | 45% | 7.2 mph | 53% | 27% |
| April | 57°F | 70% | 48% | 6.6 mph | 60% | 19% |
| May | 66°F | 73% | 52% | 5.2 mph | 62% | 13% |
| June | 70°F | 73% | 53% | 4.5 mph | 67% | 9% |
| July | 72°F | 75% | 54% | 4.0 mph | 69% | 7% |
| August | 69°F | 73% | 50% | 4.8 mph | 67% | 10% |
| September | 60°F | 71% | 46% | 5.3 mph | 69% | 14% |
| October | 51°F | 73% | 48% | 5.4 mph | 64% | 22% |
| November | 42°F | 73% | 49% | 6.0 mph | 57% | 30% |
| December | 38°F | 73% | 53% | 6.7 mph | 50% | 38% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00003940. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is Jackson?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Jackson, 4.6 kWh per square metre a day. June is the sunniest month (83%) and February the cloudiest (67%). Among the 459 U.S. places of 50,000 or more, that ranks tied 210th (with 32 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.7 |
| February | 67% | 3.2 |
| March | 73% | 4.4 |
| April | 78% | 5.6 |
| May | 80% | 6.2 |
| June | 83% | 6.6 |
| July | 82% | 6.2 |
| August | 83% | 5.8 |
| September | 83% | 5.1 |
| October | 81% | 4.2 |
| November | 78% | 3.2 |
| December | 70% | 2.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Jackson need?
A normal year in Jackson brings 2,222 heating degree days, 59% fewer than the median U.S. place (5,373), and 2,402 cooling degree days, 2.6 times the median (908). Four months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,162 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 562 | 5 |
| February | 404 | 9 |
| March | 253 | 33 |
| April | 94 | 91 |
| May | 12 | 258 |
| June | 0 | 439 |
| July | 0 | 532 |
| August | 0 | 522 |
| September | 3 | 360 |
| October | 87 | 126 |
| November | 308 | 20 |
| December | 500 | 9 |
| Year (annual) | 2,222 | 2,402 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003940. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Jackson been warmer than normal lately?
2025 averaged 68.0°F, 2.6°F above the 1991-2020 normal of 65.4°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 66.1°F | +0.7°F | 53.64 | 3.2 |
| 2022 | 65.6°F | +0.2°F | 64.55 | 0.0 |
| 2023 | 68.7°F | +3.3°F | 41.06 | 0.0 |
| 2024 | 68.3°F | +2.9°F | 66.96 | 0.1 |
| 2025 | 68.0°F | +2.6°F | 55.11 | 0.0 |
Over 80 complete years from 1943 to 2025, the station's annual mean temperature rose at a fitted 2.6°F per century (+0.14°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00003940; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Jackson's climate compare?
Jackson is warmer than 52 of the other 80 places with their own NOAA record in Mississippi, and wetter than 20. Across the 7,247 U.S. stations with normals, its annual mean of 65.4°F is warmer than 89%.
In the Köppen classification computed from these normals, Jackson is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Jackson share this climate record?
10 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Pearl, MS28,458 people · 3 mi S
- Madison, MS28,210 people · 11 mi N
- Brandon, MS25,870 people · 6 mi SE
- Ridgeland, MS24,576 people · 9 mi NW
- Flowood, MS10,853 people · 1 mi N
- Richland, MS7,607 people · 8 mi SW
- Florence, MS4,810 people · 12 mi S
- Cleary, MS2,060 people · 13 mi SW
- Robinhood, MS1,304 people · 11 mi SE
- Pelahatchie, MS1,300 people · 16 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Jackson's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Jackson. This page uses Jackson International Airport; the other differs by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Jackson Hawkins Field USW00013927 | 2 mi N | 342 ft | 66.0°F | 38°F | 92°F | 51.3 | – | March 6 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Jackson's climate
What is the coldest month in Jackson?
January, with a normal high of 57°F and a normal low of 37°F. The warmest is July (92°F by day, 72°F at night).
Does it snow in Jackson?
Yes: 1 inch in a normal year, falling on 1 days with 0.1 inch or more, the most in December (0.5 inches).
What is the rainiest month in Jackson?
April, with 5.84 in of precipitation in a normal year; the driest is September with 3.48 in.
What plant hardiness zone is Jackson in?
The USDA's 2023 map puts Jackson in zone 8b across its 12 ZIP code areas (8b in 39212, the largest). By the same method at Jackson's NOAA station, the coldest night of a typical year reaches 18°F (30 years, 1991-2020): zone 8b.
How late can frost come in Jackson?
In half of years the last 32°F night comes after March 14; in one year in ten it comes after April 2. Waiting until April 2 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Jackson in OctoberThis month day by day, its records and recent years
- Mississippi climateThe statewide normals and every place in the state
- Canton, MS24 miles from this station, 63.4°F a year
- Oakley Experiment Station, MS27 miles from this station, 65.4°F a year
- D'Lo, MS27 miles from this station, 67.5°F a year
- Crystal Springs, MS31 miles from this station, 65.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made