Bastrop, Louisiana climate: Normal weather by month, frost dates and records
Bastrop's normal year runs from 34°F January nights to 91°F July afternoons, with 58.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.4°C, January lows of 1°C, July highs of 33°C, 1,483 mm of precipitation a year.
- NOAA stationBastrop
- Station IDUSC00160537
- Location32.73°N 91.91°W
- Elevation150 ft (46 m)
- Population8,922
On October 10, the normal high in Bastrop is 79°F and the normal low 55°F, and the chance of measurable rain or snow is 21%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Bastrop.
- Jan 54° 34°
- Feb 58° 37°
- Mar 67° 44°
- Apr 74° 52°
- May 81° 61°
- Jun 88° 69°
- Jul 91° 72°
- Aug 91° 70°
- Sep 86° 64°
- Oct 76° 52°
- Nov 64° 42°
- Dec 56° 36°
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 Bastrop each month?
July is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 34°F. The most precipitation falls in April (6.14 in), the least in September (3.41 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 54°F | 34°F | 43.8°F | 5.72 | 10 | <1 | 16 | 10 h 10 min |
| February | 58°F | 37°F | 47.5°F | 4.91 | 9 | <1 | 11 | 11 h |
| March | 67°F | 44°F | 55.2°F | 4.94 | 9 | <1 | 5 | 12 h |
| April | 74°F | 52°F | 62.9°F | 6.14 | 7 | <1 | <1 | 13 h |
| May | 81°F | 61°F | 71.0°F | 5.21 | 9 | 3 | <1 | 13 h 50 min |
| June | 88°F | 69°F | 78.4°F | 4.13 | 8 | 16 | <1 | 14 h 20 min |
| July | 91°F | 72°F | 81.1°F | 4.58 | 8 | 23 | <1 | 14 h 10 min |
| August | 91°F | 70°F | 80.5°F | 4.68 | 7 | 23 | <1 | 13 h 20 min |
| September | 86°F | 64°F | 75.2°F | 3.41 | 6 | 12 | <1 | 12 h 30 min |
| October | 76°F | 52°F | 64.2°F | 5.11 | 7 | 2 | 1 | 11 h 30 min |
| November | 64°F | 42°F | 53.3°F | 4.37 | 8 | <1 | 6 | 10 h 30 min |
| December | 56°F | 36°F | 46.2°F | 5.19 | 9 | <1 | 15 | 10 h |
| Year (annual) | 74°F | 53°F | 63.3°F | 58.39 | 96 | 80 | 53 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 12°C | 1°C | 6.6°C | 145 mm |
| February | 15°C | 3°C | 8.6°C | 125 mm |
| March | 19°C | 6°C | 12.9°C | 125 mm |
| April | 24°C | 11°C | 17.2°C | 156 mm |
| May | 27°C | 16°C | 21.7°C | 132 mm |
| June | 31°C | 20°C | 25.8°C | 105 mm |
| July | 33°C | 22°C | 27.3°C | 116 mm |
| August | 33°C | 21°C | 26.9°C | 119 mm |
| September | 30°C | 18°C | 24.0°C | 87 mm |
| October | 25°C | 11°C | 17.9°C | 130 mm |
| November | 18°C | 6°C | 11.8°C | 111 mm |
| December | 13°C | 2°C | 7.9°C | 132 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00160537; 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 Bastrop?
Normal highs sit between 65°F and 85°F in March, April, May and October. 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 USC00160537.
When is the last frost in Bastrop?
In Bastrop, the last spring frost (32°F) comes after March 15 in half of years and after April 3 in one year in ten; the first autumn frost comes before November 12 in half of years and before October 29 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 151 year in 10 after April 3; 9 in 10 after February 26
- First autumn frost, half of years before
- November 121 year in 10 before October 29; 9 in 10 before December 2
NOAA puts the median frost-free season at 241 days, and the season without a hard freeze (28°F) at 270 days.
A hard freeze (28°F) comes after March 2 in half of springs and before November 26 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Bastrop in zone 8b in ZIP code 71220, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Bastrop's NOAA station is in zone 8b: the coldest night of a typical year reaches 18°F (17 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 USC00160537; 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 Bastrop?
In a normal year in Bastrop, 80 days a year reach 90°F (5 of them 100°F or more), 53 nights fall to 32°F or colder and 96 days bring measurable precipitation.
- Days at 90°F or more
- 80a normal year
- Days at 100°F or more
- 5a normal year
- Nights at 32°F or colder
- 53a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 96a normal year
The highest temperature in this station's record (since 1893) is 110°F, on September 5, 1951; the lowest is −12°F, on February 13, 1899.
The wettest calendar year on that record is 1991, with 85.99 in; the snowiest season is 1957–58, with 6.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00160537; records: ACIS (NOAA Regional Climate Centers), station USC00160537. Records use complete months only; a month missing more than three days is left out.
How sunny is Bastrop?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Bastrop, 4.6 kWh per square metre a day. June is the sunniest month (83%) and February the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.7 |
| February | 66% | 3.2 |
| March | 73% | 4.4 |
| April | 77% | 5.5 |
| May | 80% | 6.1 |
| June | 83% | 6.5 |
| July | 83% | 6.3 |
| August | 83% | 5.8 |
| September | 83% | 5.1 |
| October | 81% | 4.2 |
| November | 78% | 3.1 |
| 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 Bastrop need?
A normal year in Bastrop brings 2,705 heating degree days, 50% fewer than the median U.S. place (5,373), and 2,106 cooling degree days, 2.3 times 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 5,606 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 658 | 2 |
| February | 493 | 3 |
| March | 323 | 20 |
| April | 131 | 68 |
| May | 26 | 212 |
| June | 0 | 401 |
| July | 0 | 498 |
| August | 0 | 479 |
| September | 7 | 313 |
| October | 118 | 95 |
| November | 365 | 12 |
| December | 585 | 4 |
| Year (annual) | 2,705 | 2,106 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00160537. 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 Bastrop's climate compare?
Bastrop is warmer than 1 of the other 64 places with their own NOAA record in Louisiana, and wetter than 19. Across the 7,247 U.S. stations with normals, its annual mean of 63.3°F is warmer than 84%.
In the Köppen classification computed from these normals, Bastrop 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 Bastrop share this climate record?
3 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.
- Sterlington, LA2,557 people · 9 mi W
- Mer Rouge, LA454 people · 8 mi NE
- Collinston, LA254 people · 4 mi SE
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 Bastrop's climate
What is the coldest month in Bastrop?
January, with a normal high of 54°F and a normal low of 34°F. The warmest is July (91°F by day, 72°F at night).
Does it snow in Bastrop?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Bastrop?
April, with 6.14 in of precipitation in a normal year; the driest is September with 3.41 in.
What plant hardiness zone is Bastrop in?
The USDA's 2023 map puts Bastrop in zone 8b in ZIP code 71220, the nearest ZIP area. By the same method at Bastrop's NOAA station, the coldest night of a typical year reaches 18°F (17 years, 1991-2020): zone 8b.
How late can frost come in Bastrop?
In half of years the last 32°F night comes after March 15; in one year in ten it comes after April 3. Waiting until April 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Louisiana climateThe statewide normals and every place in the state
- Monroe (26 mi N), LA16 miles from this station, 63.4°F a year
- Monroe, LA17 miles from this station, 65.7°F a year
- Rayville, LA19 miles from this station, 66.6°F a year
- Crossett, AR26 miles from this station, 65.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made