Iuka, Mississippi climate: Normal weather by month, frost dates and records
Iuka's normal year runs from 28°F January nights to 88°F July afternoons, with 62.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.0°C, January lows of −2°C, July highs of 31°C, 1,583 mm of precipitation a year.
- NOAA stationIuka
- Station IDUSC00224455
- Location34.76°N 88.20°W
- Elevation600 ft (183 m)
- Population3,075
On October 22, the normal high in Iuka is 72°F and the normal low 44°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 Iuka.
- Jan 49° 28°
- Feb 54° 31°
- Mar 63° 37°
- Apr 72° 46°
- May 79° 55°
- Jun 86° 63°
- Jul 88° 67°
- Aug 88° 66°
- Sep 84° 59°
- Oct 74° 46°
- Nov 62° 36°
- Dec 52° 31°
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 Iuka each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 28°F. The most precipitation falls in December (6.73 in), the least in October (3.79 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 49°F | 28°F | 38.6°F | 5.16 | 11 | <1 | 21 | 10 h |
| February | 54°F | 31°F | 42.4°F | 5.51 | 10 | <1 | 18 | 10 h 50 min |
| March | 63°F | 37°F | 50.0°F | 5.92 | 10 | <1 | 13 | 11 h 50 min |
| April | 72°F | 46°F | 58.7°F | 5.48 | 9 | <1 | 4 | 13 h |
| May | 79°F | 55°F | 67.1°F | 5.39 | 9 | 1 | <1 | 14 h |
| June | 86°F | 63°F | 74.5°F | 4.33 | 9 | 8 | <1 | 14 h 30 min |
| July | 88°F | 67°F | 77.8°F | 5.00 | 11 | 14 | <1 | 14 h 20 min |
| August | 88°F | 66°F | 77.1°F | 5.21 | 9 | 14 | <1 | 13 h 30 min |
| September | 84°F | 59°F | 71.5°F | 5.28 | 6 | 5 | <1 | 12 h 30 min |
| October | 74°F | 46°F | 59.8°F | 3.79 | 7 | <1 | 4 | 11 h 20 min |
| November | 62°F | 36°F | 49.0°F | 4.51 | 9 | <1 | 14 | 10 h 20 min |
| December | 52°F | 31°F | 41.6°F | 6.73 | 11 | <1 | 21 | 9 h 50 min |
| Year (annual) | 71°F | 47°F | 59.0°F | 62.31 | 110 | 41 | 95 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 10°C | −2°C | 3.7°C | 131 mm |
| February | 12°C | −1°C | 5.8°C | 140 mm |
| March | 17°C | 3°C | 10.0°C | 150 mm |
| April | 22°C | 8°C | 14.8°C | 139 mm |
| May | 26°C | 13°C | 19.5°C | 137 mm |
| June | 30°C | 17°C | 23.6°C | 110 mm |
| July | 31°C | 19°C | 25.4°C | 127 mm |
| August | 31°C | 19°C | 25.1°C | 132 mm |
| September | 29°C | 15°C | 21.9°C | 134 mm |
| October | 23°C | 8°C | 15.4°C | 96 mm |
| November | 17°C | 2°C | 9.4°C | 115 mm |
| December | 11°C | 0°C | 5.3°C | 171 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Booneville (23 miles away), gets 1 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00224455; 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 Iuka?
Normal highs sit between 65°F and 85°F in April, May, September and October. Of those, September has the fewest days with rain (6).
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 USC00224455.
When is the last frost in Iuka?
In Iuka, the last spring frost (32°F) comes after April 9 in half of years and after April 24 in one year in ten; the first autumn frost comes before October 28 in half of years and before October 15 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
- April 91 year in 10 after April 24; 9 in 10 after March 23
- First autumn frost, half of years before
- October 281 year in 10 before October 15; 9 in 10 before November 9
NOAA puts the median frost-free season at 203 days, and the season without a hard freeze (28°F) at 224 days.
A hard freeze (28°F) comes after March 29 in half of springs and before November 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Iuka in zone 7b in ZIP code 38852, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Iuka's NOAA station is in zone 7b: the coldest night of a typical year reaches 7°F (15 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 USC00224455; 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.
How hot and how cold does it get in Iuka?
In a normal year in Iuka, 41 days a year reach 90°F (1 of them 100°F or more), 95 nights fall to 32°F or colder and 110 days bring measurable precipitation.
- Days at 90°F or more
- 41a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 95a normal year
- Days that stay below freezing
- 4high of 32°F or less
- Days with 0.01 inch of precipitation
- 110a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00224455.
How sunny is Iuka?
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Iuka, 4.5 kWh per square metre a day. June is the sunniest month (82%) and February the cloudiest (65%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 2.5 |
| February | 65% | 3.0 |
| March | 70% | 4.1 |
| April | 75% | 5.4 |
| May | 77% | 6.0 |
| June | 82% | 6.5 |
| July | 81% | 6.2 |
| August | 81% | 5.7 |
| September | 81% | 5.0 |
| October | 78% | 3.9 |
| November | 76% | 2.9 |
| December | 67% | 2.2 |
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 Iuka need?
A normal year in Iuka brings 3,641 heating degree days, 32% fewer than the median U.S. place (5,373), and 1,492 cooling degree days, 64% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,547 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 818 | 0 |
| February | 633 | 0 |
| March | 471 | 8 |
| April | 223 | 35 |
| May | 60 | 127 |
| June | 4 | 291 |
| July | 0 | 395 |
| August | 1 | 376 |
| September | 22 | 215 |
| October | 200 | 40 |
| November | 485 | 5 |
| December | 724 | 1 |
| Year (annual) | 3,641 | 1,492 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00224455. 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.
How does Iuka's climate compare?
Iuka is warmer than 0 of the other 80 places with their own NOAA record in Mississippi, and wetter than 61. Across the 7,247 U.S. stations with normals, its annual mean of 59.0°F is warmer than 72%.
In the Köppen classification computed from these normals, Iuka 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 Iuka share this climate record?
8 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.
- Belmont, MS1,817 people · 18 mi S
- Cherokee, AL967 people · 13 mi E
- Burnsville, MS846 people · 8 mi NW
- Walnut Grove, TN467 people · 21 mi N
- Tishomingo, MS364 people · 9 mi S
- Waterloo, AL184 people · 13 mi NE
- Paden, MS105 people · 8 mi SW
- Dennis, MS90 people · 14 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Iuka's climate
What is the coldest month in Iuka?
January, with a normal high of 49°F and a normal low of 28°F. The warmest is July (88°F by day, 67°F at night).
Does it snow in Iuka?
Yes. NOAA publishes no 1991-2020 snowfall normal for Iuka's NOAA station; the nearest record that keeps one, Booneville (23 miles away), records 1 inches of snow in a normal year.
What is the rainiest month in Iuka?
December, with 6.73 in of precipitation in a normal year; the driest is October with 3.79 in.
What plant hardiness zone is Iuka in?
The USDA's 2023 map puts Iuka in zone 7b in ZIP code 38852, the nearest ZIP area. By the same method at Iuka's NOAA station, the coldest night of a typical year reaches 7°F (15 years, 1991-2020): zone 7b.
How late can frost come in Iuka?
In half of years the last 32°F night comes after April 9; in one year in ten it comes after April 24. Waiting until April 24 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Mississippi climateThe statewide normals and every place in the state
- Booneville, MS22 miles from this station, 60.0°F a year
- Corinth, MS25 miles from this station, 60.5°F a year
- Savannah, TN28 miles from this station, 61.5°F a year
- Muscle Shoals Water Treatment Plant, AL32 miles from this station, 60.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made