Oakley Experiment Station, Mississippi climate: Climate normals at a NOAA weather station
Oakley Experiment Station's normal year runs from 35°F January nights to 93°F July afternoons, with 60.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.6°C, January lows of 2°C, July highs of 34°C, 1,528 mm of precipitation a year.
- NOAA stationOakley Experiment Station
- Station IDUSC00226476
- Location32.21°N 90.51°W
- Elevation205 ft (63 m)
On October 23, the normal high in Oakley Experiment Station is 78°F and the normal low 50°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Oakley Experiment Station.
- Jan 59° 35°
- Feb 63° 39°
- Mar 70° 46°
- Apr 77° 53°
- May 84° 62°
- Jun 91° 69°
- Jul 93° 71°
- Aug 93° 70°
- Sep 89° 64°
- Oct 81° 53°
- Nov 69° 42°
- Dec 61° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Oakley Experiment Station each month?
July is the warmest month, with normal highs of 93°F; January the coldest, with normal lows of 35°F. The most precipitation falls in January (5.86 in), the least in October (3.99 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 59°F | 35°F | 46.9°F | 5.86 | – | <1 | 16 | 10 h 20 min |
| February | 63°F | 39°F | 50.7°F | 5.52 | – | <1 | 11 | 11 h |
| March | 70°F | 46°F | 58.0°F | 5.65 | – | <1 | 5 | 12 h |
| April | 77°F | 53°F | 64.8°F | 5.77 | – | <1 | 1 | 13 h |
| May | 84°F | 62°F | 73.0°F | 4.45 | – | 7 | <1 | 13 h 50 min |
| June | 91°F | 69°F | 79.8°F | 4.82 | – | 20 | <1 | 14 h 10 min |
| July | 93°F | 71°F | 82.3°F | 5.18 | – | 26 | <1 | 14 h |
| August | 93°F | 70°F | 81.6°F | 4.70 | – | 26 | <1 | 13 h 20 min |
| September | 89°F | 64°F | 76.8°F | 4.09 | – | 17 | <1 | 12 h 20 min |
| October | 81°F | 53°F | 66.7°F | 3.99 | – | 3 | 1 | 11 h 30 min |
| November | 69°F | 42°F | 55.2°F | 4.51 | – | <1 | 8 | 10 h 30 min |
| December | 61°F | 38°F | 49.6°F | 5.61 | – | <1 | 13 | 10 h |
| Year (annual) | 78°F | 53°F | 65.4°F | 60.15 | – | 100 | 54 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 15°C | 2°C | 8.3°C | 149 mm |
| February | 17°C | 4°C | 10.4°C | 140 mm |
| March | 21°C | 8°C | 14.4°C | 144 mm |
| April | 25°C | 11°C | 18.2°C | 147 mm |
| May | 29°C | 16°C | 22.8°C | 113 mm |
| June | 33°C | 21°C | 26.6°C | 122 mm |
| July | 34°C | 22°C | 27.9°C | 132 mm |
| August | 34°C | 21°C | 27.6°C | 119 mm |
| September | 32°C | 18°C | 24.9°C | 104 mm |
| October | 27°C | 12°C | 19.3°C | 101 mm |
| November | 20°C | 5°C | 12.9°C | 115 mm |
| December | 16°C | 4°C | 9.8°C | 142 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Crystal Springs (20 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 USC00226476; 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.
Which months are mildest at Oakley Experiment Station?
Normal highs sit between 65°F and 85°F in March, April, May, October and November.
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 USC00226476.
When is the last frost at Oakley Experiment Station?
In Oakley Experiment Station, the last spring frost (32°F) comes after March 16 in half of years and after April 6 in one year in ten; the first autumn frost comes before November 6 in half of years and before October 24 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 161 year in 10 after April 6; 9 in 10 after February 25
- First autumn frost, half of years before
- November 61 year in 10 before October 24; 9 in 10 before November 26
NOAA puts the median frost-free season at 236 days, and the season without a hard freeze (28°F) at 262 days.
A hard freeze (28°F) comes after March 1 in half of springs and before November 18 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Oakley Experiment Station in zone 8b in ZIP code 39154, the nearest ZIP area.
Frost dates for every NOAA station in Mississippi · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00226476; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 at Oakley Experiment Station?
In a normal year in Oakley Experiment Station, 100 days a year reach 90°F (7 of them 100°F or more) and 54 nights fall to 32°F or colder.
- Days at 90°F or more
- 100a normal year
- Days at 100°F or more
- 7a normal year
- Nights at 32°F or colder
- 54a normal year
- Days that stay below freezing
- 1high of 32°F or less
The highest temperature in this station's record (since 1970) is 110°F, on August 31, 2000; the lowest is 1°F, on December 23, 1989.
The wettest calendar year on that record is 1983, with 71.58 in; the snowiest season is 1959–60, with 8.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00226476; records: ACIS (NOAA Regional Climate Centers), station USC00226476. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Oakley Experiment Station?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds at Oakley Experiment Station, 4.6 kWh per square metre a day. June is the sunniest month (83%) and February the cloudiest (67%).
| 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 many heating and cooling degree days does Oakley Experiment Station record?
A normal year at Oakley Experiment Station brings 2,234 heating degree days, 58% fewer than the median U.S. place (5,373), and 2,425 cooling degree days, 2.7 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 6,186 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 568 | 7 |
| February | 410 | 11 |
| March | 251 | 34 |
| April | 100 | 93 |
| May | 14 | 261 |
| June | 0 | 442 |
| July | 0 | 536 |
| August | 0 | 516 |
| September | 5 | 358 |
| October | 85 | 138 |
| November | 315 | 20 |
| December | 486 | 10 |
| Year (annual) | 2,234 | 2,425 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00226476. 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 Oakley Experiment Station's climate compare?
Oakley Experiment Station is warmer than 52 of the 81 places with their own NOAA record in Mississippi, and wetter than 45. 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, Oakley Experiment Station 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 Oakley Experiment Station share this climate record?
7 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.
- Clinton, MS26,617 people · 14 mi NE
- Byram, MS12,656 people · 13 mi E
- Raymond, MS1,387 people · 7 mi NE
- Edwards, MS927 people · 10 mi NW
- Utica, MS604 people · 9 mi SW
- Bolton, MS420 people · 11 mi N
- Learned, MS54 people · 2 mi W
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 Oakley Experiment Station's climate
What is the coldest month at Oakley Experiment Station?
January, with a normal high of 59°F and a normal low of 35°F. The warmest is July (93°F by day, 71°F at night).
Does it snow at Oakley Experiment Station?
Rarely. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Crystal Springs (20 miles away), records 1 inches of snow in a normal year.
What is the rainiest month at Oakley Experiment Station?
January, with 5.86 in of precipitation in a normal year; the driest is October with 3.99 in.
What plant hardiness zone is Oakley Experiment Station in?
The USDA's 2023 map puts Oakley Experiment Station in zone 8b in ZIP code 39154, the nearest ZIP area.
How late can frost come at Oakley Experiment Station?
In half of years the last 32°F night comes after March 16; in one year in ten it comes after April 6. Waiting until April 6 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Mississippi climateThe statewide normals and every place in the state
- Crystal Springs, MS20 miles from this station, 65.5°F a year
- Vicksburg, MS24 miles from this station, 66.3°F a year
- Hazlehurst, MS26 miles from this station, 65.7°F a year
- Jackson, MS27 miles from this station, 65.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made