Lsu Dean Lee Research Station, Louisiana climate: Climate normals at a NOAA weather station
Lsu Dean Lee Research Station's normal year runs from 39°F January nights to 93°F July afternoons, with 60.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 19.4°C, January lows of 4°C, July highs of 34°C, 1,525 mm of precipitation a year.
- NOAA stationLsu Dean Lee Research Station
- Station IDUSC00165630
- Location31.18°N 92.41°W
- Elevation70 ft (21 m)
On October 22, the normal high in Lsu Dean Lee Research Station is 78°F and the normal low 53°F, and the chance of measurable rain or snow is 28%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Lsu Dean Lee Research Station.
- Jan 60° 39°
- Feb 64° 43°
- Mar 71° 49°
- Apr 77° 56°
- May 85° 65°
- Jun 90° 71°
- Jul 93° 73°
- Aug 93° 73°
- Sep 89° 66°
- Oct 80° 55°
- Nov 70° 46°
- Dec 62° 40°
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 Lsu Dean Lee Research Station each month?
July is the warmest month, with normal highs of 93°F; January the coldest, with normal lows of 39°F. The most precipitation falls in June (6.01 in), the least in August (3.62 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 60°F | 39°F | 49.4°F | 5.97 | 12 | <1 | 10 | 10 h 20 min |
| February | 64°F | 43°F | 53.3°F | 4.98 | 10 | <1 | 6 | 11 h |
| March | 71°F | 49°F | 59.5°F | 4.47 | 9 | <1 | 1 | 12 h |
| April | 77°F | 56°F | 66.4°F | 4.82 | 7 | 1 | <1 | 12 h 50 min |
| May | 85°F | 65°F | 74.6°F | 4.88 | 8 | 8 | <1 | 13 h 40 min |
| June | 90°F | 71°F | 80.6°F | 6.01 | 11 | 20 | <1 | 14 h 10 min |
| July | 93°F | 73°F | 82.7°F | 4.13 | 10 | 26 | <1 | 14 h |
| August | 93°F | 73°F | 82.7°F | 3.62 | 9 | 26 | <1 | 13 h 20 min |
| September | 89°F | 66°F | 77.7°F | 4.75 | 8 | 17 | <1 | 12 h 20 min |
| October | 80°F | 55°F | 67.6°F | 5.46 | 8 | 3 | <1 | 11 h 30 min |
| November | 70°F | 46°F | 57.7°F | 5.59 | 10 | <1 | 3 | 10 h 40 min |
| December | 62°F | 40°F | 51.0°F | 5.37 | 11 | <1 | 9 | 10 h 10 min |
| Year (annual) | 78°F | 56°F | 66.9°F | 60.05 | 113 | 100 | 28 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 15°C | 4°C | 9.7°C | 152 mm |
| February | 18°C | 6°C | 11.8°C | 126 mm |
| March | 21°C | 9°C | 15.3°C | 114 mm |
| April | 25°C | 13°C | 19.1°C | 122 mm |
| May | 29°C | 18°C | 23.7°C | 124 mm |
| June | 32°C | 22°C | 27.0°C | 153 mm |
| July | 34°C | 23°C | 28.2°C | 105 mm |
| August | 34°C | 23°C | 28.2°C | 92 mm |
| September | 32°C | 19°C | 25.4°C | 121 mm |
| October | 27°C | 13°C | 19.8°C | 139 mm |
| November | 21°C | 8°C | 14.3°C | 142 mm |
| December | 17°C | 5°C | 10.6°C | 136 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00165630; 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 Lsu Dean Lee Research Station?
Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, April 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 USC00165630.
When is the last frost at Lsu Dean Lee Research Station?
In Lsu Dean Lee Research Station, the last spring frost (32°F) comes after March 1 in half of years and after March 22 in one year in ten; the first autumn frost comes before November 22 in half of years and before November 2 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 11 year in 10 after March 22; 9 in 10 after February 1
- First autumn frost, half of years before
- November 221 year in 10 before November 2; 9 in 10 before December 13
NOAA puts the median frost-free season at 267 days, and the season without a hard freeze (28°F) at 304 days.
A hard freeze (28°F) comes after February 10 in half of springs and before December 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Lsu Dean Lee Research Station in zone 9a in ZIP code 71302, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 9a: the coldest night of a typical year reaches 22°F (16 complete years).
Frost dates for every NOAA station in Louisiana · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00165630; 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 at Lsu Dean Lee Research Station?
In a normal year in Lsu Dean Lee Research Station, 100 days a year reach 90°F (5 of them 100°F or more), 28 nights fall to 32°F or colder and 113 days bring measurable precipitation.
- Days at 90°F or more
- 100a normal year
- Days at 100°F or more
- 5a normal year
- Nights at 32°F or colder
- 28a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 113a normal year
The highest temperature in this station's record (since 1976) is 110°F, on September 1, 2000; the lowest is 7°F, on December 23, 1989.
The wettest calendar year on that record is 1991, with 79.41 in; the snowiest season is 1977–78, with 3.4 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00165630; records: ACIS (NOAA Regional Climate Centers), station USC00165630. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Lsu Dean Lee Research Station?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds at Lsu Dean Lee Research Station, 4.6 kWh per square metre a day. August is the sunniest month (82%) and February the cloudiest (65%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.8 |
| February | 65% | 3.2 |
| March | 71% | 4.4 |
| April | 76% | 5.4 |
| May | 79% | 6.0 |
| June | 80% | 6.2 |
| July | 81% | 6.1 |
| August | 82% | 5.8 |
| September | 81% | 5.1 |
| October | 81% | 4.2 |
| November | 78% | 3.2 |
| December | 69% | 2.5 |
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 Lsu Dean Lee Research Station record?
A normal year at Lsu Dean Lee Research Station brings 1,869 heating degree days, 65% fewer than the median U.S. place (5,373), and 2,605 cooling degree days, 2.9 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,556 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 489 | 6 |
| February | 340 | 12 |
| March | 206 | 37 |
| April | 71 | 114 |
| May | 6 | 303 |
| June | 0 | 466 |
| July | 0 | 549 |
| August | 0 | 550 |
| September | 3 | 383 |
| October | 66 | 148 |
| November | 245 | 26 |
| December | 443 | 11 |
| Year (annual) | 1,869 | 2,605 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00165630. 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 Lsu Dean Lee Research Station's climate compare?
Lsu Dean Lee Research Station is warmer than 30 of the 65 places with their own NOAA record in Louisiana, and wetter than 32. Across the 7,247 U.S. stations with normals, its annual mean of 66.9°F is warmer than 92%.
In the Köppen classification computed from these normals, Lsu Dean Lee Research 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 Lsu Dean Lee Research Station share this climate record?
4 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.
- Woodworth, LA1,749 people · 6 mi W
- Lecompte, LA823 people · 6 mi S
- Center Point, LA645 people · 13 mi NE
- Forest Hill, LA613 people · 11 mi SW
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 Lsu Dean Lee Research Station's climate
What is the coldest month at Lsu Dean Lee Research Station?
January, with a normal high of 60°F and a normal low of 39°F. The warmest is July (93°F by day, 73°F at night).
Does it snow at Lsu Dean Lee Research Station?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month at Lsu Dean Lee Research Station?
June, with 6.01 in of precipitation in a normal year; the driest is August with 3.62 in.
What plant hardiness zone is Lsu Dean Lee Research Station in?
The USDA's 2023 map puts Lsu Dean Lee Research Station in zone 9a in ZIP code 71302, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 22°F (16 years, 1991-2020): zone 9a.
How late can frost come at Lsu Dean Lee Research Station?
In half of years the last 32°F night comes after March 1; in one year in ten it comes after March 22. Waiting until March 22 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Louisiana climateThe statewide normals and every place in the state
- Alexandria, LA14 miles from this station, 66.9°F a year
- Bunkie, LA21 miles from this station, 67.3°F a year
- Boyce, LA24 miles from this station, 65.0°F a year
- Elizabeth, LA32 miles from this station, 66.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made