Lake Arthur, LA Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Lake Arthur's primary NOAA station, LAKE ARTHUR 7 SW.
The climate verdict for Lake Arthur
Warm-season cooling demand defines Lake Arthur, Louisiana, running at more than twice its heating total. The NOAA normal records an annual average of 69°F. It scores 90/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 91% of them.
- 69°F
- yearly average temperature, NOAA normal
- 90/100
- comfort score, above 91% of station-mapped location scores
- 59.9"
- yearly precipitation total
- 304 days
- frost-free days per growing season
Lake Arthur: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00165065 · Lake Arthur, LA 69°F mean · 59.9" precip
TEMP-MILD · RANK-WARM · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-TOP · LOAD-COOL · STN-1 · BOOK-FULL
- TEMP-MILD 69°F
- RANK-WARM #6,449
- PHOTO-FINISH ≈ Mobile Dwtn
- PRCP-WET 59.9"
- SWING-MID 31°F
- COMF-TOP 90/100
- LOAD-COOL 2,892 CDD
- STN-1 USC00165065
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Mobile Dwtn, AL (+ 0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every LA station list.
- Lake Arthur (this station) 69°F
- Cold Beaumont Rsch C…, TX 69°F
- Hot New Iberia Acad…, LA 69°F
- Near Mobile Dwtn, AL 69°F
- Near Whiting Field N…, FL 69°F
Lake Arthur sits in Louisiana, the #3 hottest U.S. state at 67.3°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Climate Living Index · Lake Arthur
Lake Arthur: 76/100 · grade B
Lake Arthur publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Lake Arthur, not an official NOAA rating. Rankings still use Comfort Score 90/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 304 days/year | 100/100 · A |
| Annual temperature balance | 69.0°F · 1.5° from 67.5°F | 94/100 · A |
| Snowfall burden | 0.1 inches/year | 89/100 · A |
| Normal heat + freeze calendar | 88 calendar days | 80/100 · B |
| Precipitation balance | 59.9 in · 24.9 from 35 in | 12/100 · F |
Lake Arthur · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Lake Arthur is a temperate Köppen climate: Cfa
Coldest-month mean 52.4°F and warmest-month mean 83.2°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 83.2°F
- Coldest month
- 52.4°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · cooling-led station
Where Lake Arthur sits across the climate record
Three NOAA fields for Lake Arthur's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 6% warmest
- Among 6,861 stations, Lake Arthur sits in the warmer third of annual means.
- Annual precipitation
- Top 6% wettest
- Lake Arthur's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 89%
- Warmest-to-coldest month gap for Lake Arthur is compact versus 6,861 complete station-years.
How Lake Arthur compares across U.S. station-mapped locations
Lake Arthur's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
90 Top 9% score exceeds 91% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). Below this entry.
- 90–100: 564 station-mapped locations (9%). This entry sits in this band.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Lake Arthur's measured station temperature trend
MethodologyAcross 60 complete annual observations from 1904 to 2025, LAKE ARTHUR 7 SW warmed at a fitted rate of 0.08°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Lake Arthur primary station fitted change +0.08 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 61°F (16°C) | 44°F (6°C) | 52°F (11°C) | 5.6" | 0.0" | 4.7 | 0.0 |
| February | 66°F (19°C) | 47°F (8°C) | 56°F (13°C) | 4.2" | 0.0" | 1.8 | 0.0 |
| March | 72°F (22°C) | 53°F (12°C) | 62°F (17°C) | 3.1" | 0.0" | 0.6 | 0.0 |
| April | 78°F (25°C) | 60°F (15°C) | 69°F (20°C) | 4.8" | 0.0" | 0.0 | 0.2 |
| May | 84°F (29°C) | 68°F (20°C) | 76°F (24°C) | 4.6" | 0.0" | 0.0 | 3.7 |
| June | 90°F (32°C) | 73°F (23°C) | 82°F (28°C) | 6.2" | 0.0" | 0.0 | 16.4 |
| July | 91°F (33°C) | 75°F (24°C) | 83°F (28°C) | 5.0" | 0.0" | 0.0 | 22.5 |
| August | 92°F (33°C) | 74°F (23°C) | 83°F (28°C) | 6.1" | 0.0" | 0.0 | 23.6 |
| September | 89°F (32°C) | 70°F (21°C) | 79°F (26°C) | 5.8" | 0.0" | 0.0 | 13.9 |
| October | 81°F (27°C) | 61°F (16°C) | 71°F (22°C) | 4.5" | 0.0" | 0.0 | 2.2 |
| November | 71°F (22°C) | 51°F (10°C) | 61°F (16°C) | 5.3" | 0.0" | 0.4 | 0.0 |
| December | 63°F (17°C) | 45°F (7°C) | 54°F (12°C) | 4.8" | 0.1" | 2.5 | 0.0 |
The year, day by day
The year in Lake Arthur runs from a mild 43°F around January 5 to 92°F at the peak near August 10, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 14 through September 9, covering 88 dates. The broader mild season, normal highs of 70°F or more, runs March 9 to November 19.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 43°F around January 5.
Where the wet dates fall
The likeliest wet date is July 26, when 42% of years recorded at least a hundredth of an inch. The driest is May 5 at 24%. Summed across the calendar, that is about 129 wet dates a year.
The widest day
October 30 carries the biggest normal gap between afternoon and dawn, 21°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Lake Arthur.
Where Lake Arthur Stands Nationally
This is one of the wettest normals climates ranked: about 60 inches of precipitation in a normal year, a total fewer than one station in ten surpasses.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 21°F.
Lake Arthur earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
12.3 days with precipitation
11.1 days with precipitation
10.1 days with precipitation
7.6 days with precipitation
7.3 days with precipitation
12.3 days with precipitation
13.0 days with precipitation
12.7 days with precipitation
10.9 days with precipitation
9.3 days with precipitation
10.3 days with precipitation
Snow: 0.1"
12.7 days with precipitation
Lake Arthur spreads its precipitation across the year
Neither half of the year dominates here: June through August take 29% of the annual total and December through February 24%, with neither reaching the 35% that would mark a distinct wet season. Lake Arthur has no dry season to plan around, though it does carry a 30.8°F seasonal spread.
The gap between the wettest and driest month still matters: June averages 6.2" and March 3.1". The three wettest months together take 30% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in Lake Arthur, it arrives in quantity
59.9" of precipitation falls across only about 130 wet days here, averaging 0.46 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 130 a year, 36% of all days
- Average depth per wet day
- 0.46 inches
- Most wet days
- July, about 13
- Fewest wet days
- May, about 7
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Snow reaches Lake Arthur, but rarely amounts to much
The normals record 0.1 inches of snow a year here, most likely in December. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 0 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
December 11
50% probability date
Last Spring Freeze
February 10
50% probability date
Growing Season
304 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,394
Higher = more heating needed
Cooling Degree Days
2,892
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside LA closest to Lake Arthur on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (69°F here).
- Brackettville, TX 69°F · 0.0°F off
- Apalachicola, FL 69°F · 0.1°F off
- Arizona City, AZ 69°F · 0.1°F off
- Cross City, FL 69°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (59.9" here), excluding temperature-peer places.
- Monticello, FL 59.9" · 0.0" off
- Gainesville, AL 60.0" · 0.1" off
- Allardt, TN 59.8" · 0.1" off
- Greenville, AL 59.8" · 0.1" off
Data-derived climate profile
How Lake Arthur's climate pattern fits together
cooling led · wet · mid swing
Air-conditioning demand is the clearest thermal signal here. Lake Arthur accumulates 2,892 cooling degree days, more than twice its 1,394 heating total; the monthly table shows when that imbalance builds rather than treating it as a year-round condition.
Warm-season demand is paired with a wet annual normal: 59.9 inches of precipitation at Lake Arthur. Recorded annual snowfall is negligible. The month-by-month bars distinguish a concentrated wet season from moisture spread across the calendar.
July and January mark the typical warm and cold ends of the calendar in Lake Arthur's middle-range seasonal profile. The measured spread is 30.8°F. The annual average is 69°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
The frost-free window extends for about 304 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
These labels group NOAA 1991-2020 normals from Lake Arthur's primary station, so the summer figures are a thirty-year average rather than a ceiling: individual years have run hotter and will again. For Lake Arthur that means a descriptive range only — not an official NOAA classification and not a prediction for next summer.
Questions about Lake Arthur's climate
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Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Lake Arthur's primary station: LAKE ARTHUR 7 SW (USC00165065). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 2241050). Match rule for Lake Arthur: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Lake Arthur comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.