Hallettsville, TX Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Hallettsville's primary NOAA station, HALLETTSVILLE 2 N.
The climate verdict for Hallettsville
Warm-season cooling demand defines Hallettsville, Texas, running at more than twice its heating total. The NOAA normal records an annual average of 72°F. It scores 97/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 97% of them.
- 72°F
- average temperature, NOAA 1991-2020 normal
- 97/100
- comfort score, above 97% of station-mapped location scores
- 40.4"
- annual precipitation
- 290 days
- frost-free growing season
Hallettsville: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00413873 · Hallettsville, TX 72°F mean · 40.4" precip
TEMP-HOT · RANK-WARM · PHOTO-FINISH · PRCP-MID · SWING-MID · COMF-TOP · LOAD-COOL · STN-1 · BOOK-FULL
- TEMP-HOT 72°F
- RANK-WARM #6,587
- PHOTO-FINISH ≈ Freer
- PRCP-MID 40.4"
- SWING-MID 31°F
- COMF-TOP 97/100
- LOAD-COOL 3,587 CDD
- STN-1 USC00413873
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Freer, TX (+ 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 TX station list.
- Hallettsville (this station) 72°F
- Hot Organ Pipe Cact…, AZ 72°F
- Near Freer, TX 72°F
- Near Encinal, TX 72°F
- Near Tilden, TX 72°F
Hallettsville sits in Texas, the #4 hottest U.S. state at 66.2°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Climate Living Index · Hallettsville
Hallettsville: 80/100 · grade B
Hallettsville publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Hallettsville, not an official NOAA rating. Rankings still use Comfort Score 97/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 290 days/year | 100/100 · A |
| Snowfall burden | 0.1 inches/year | 89/100 · A |
| Annual temperature balance | 71.7°F · 4.2° from 67.5°F | 87/100 · A |
| Precipitation balance | 40.4 in · 5.4 from 35 in | 81/100 · B |
| Normal heat + freeze calendar | 128 calendar days | 60/100 · C |
Hallettsville · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Hallettsville is a temperate Köppen climate: Cfa
Coldest-month mean 55.3°F and warmest-month mean 86.3°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
- 86.3°F
- Coldest month
- 55.3°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 Hallettsville sits across the climate record
Three NOAA fields for Hallettsville's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 4% warmest
- Among 6,861 stations, Hallettsville sits in the warmer third of annual means.
- Annual precipitation
- 59th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 89%
- Warmest-to-coldest month gap for Hallettsville is compact versus 6,861 complete station-years.
How Hallettsville compares across U.S. station-mapped locations
Hallettsville's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
97 Top 3% score exceeds 97% 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
Hallettsville's measured station temperature trend
MethodologyAcross 77 complete annual observations from 1894 to 2025, HALLETTSVILLE 2 N warmed at a fitted rate of 0.16°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Hallettsville primary station fitted change +0.16 °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 | 66°F (19°C) | 45°F (7°C) | 55°F (13°C) | 3.1" | 0.0" | 4.6 | 0.0 |
| February | 69°F (21°C) | 49°F (9°C) | 59°F (15°C) | 2.3" | 0.0" | 2.2 | 0.1 |
| March | 76°F (24°C) | 55°F (13°C) | 65°F (18°C) | 3.0" | 0.0" | 0.7 | 0.1 |
| April | 82°F (28°C) | 61°F (16°C) | 71°F (22°C) | 3.5" | 0.0" | 0.0 | 1.2 |
| May | 88°F (31°C) | 69°F (20°C) | 78°F (26°C) | 4.4" | 0.0" | 0.0 | 9.5 |
| June | 94°F (34°C) | 74°F (23°C) | 84°F (29°C) | 4.5" | 0.0" | 0.0 | 22.5 |
| July | 96°F (36°C) | 75°F (24°C) | 86°F (30°C) | 2.5" | 0.0" | 0.0 | 27.9 |
| August | 98°F (36°C) | 75°F (24°C) | 86°F (30°C) | 3.2" | 0.0" | 0.0 | 28.6 |
| September | 92°F (34°C) | 71°F (22°C) | 82°F (28°C) | 3.7" | 0.0" | 0.0 | 19.9 |
| October | 85°F (30°C) | 62°F (17°C) | 74°F (23°C) | 4.3" | 0.0" | 0.0 | 7.0 |
| November | 75°F (24°C) | 53°F (12°C) | 64°F (18°C) | 3.3" | 0.0" | 1.2 | 0.3 |
| December | 67°F (19°C) | 46°F (8°C) | 57°F (14°C) | 2.7" | 0.1" | 3.9 | 0.0 |
The year, day by day
The year in Hallettsville runs from a mild 44°F around January 6 to 98°F at the peak near August 6, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from May 23 through September 27, covering 128 dates. The broader mild season, normal highs of 70°F or more, runs February 19 to November 30.
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 44°F around January 6.
Where the wet dates fall
The likeliest wet date is January 1, when 31% of years recorded at least a hundredth of an inch. The driest is August 1 at 19%. Summed across the calendar, that is about 94 wet dates a year.
The widest day
October 15 carries the biggest normal gap between afternoon and dawn, 23°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Hallettsville.
Where Hallettsville Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 128 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Hallettsville earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
9.4 days with precipitation
8.8 days with precipitation
8.9 days with precipitation
7.3 days with precipitation
7.2 days with precipitation
7.9 days with precipitation
6.6 days with precipitation
6.5 days with precipitation
8.4 days with precipitation
6.5 days with precipitation
7.0 days with precipitation
Snow: 0.1"
9.6 days with precipitation
Hallettsville spreads its precipitation across the year
Neither half of the year dominates here: June through August take 25% of the annual total and December through February 20%, with neither reaching the 35% that would mark a distinct wet season. Hallettsville has no dry season to plan around, though it does carry a 31°F seasonal spread.
The gap between the wettest and driest month still matters: June averages 4.5" and February 2.3". The three wettest months together take 33% 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 Hallettsville, it arrives in quantity
40.4" of precipitation falls across only about 94 wet days here, averaging 0.43 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 94 a year, 26% of all days
- Average depth per wet day
- 0.43 inches
- Most wet days
- December, about 10
- Fewest wet days
- August, 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 Hallettsville, 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.
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 4
50% probability date
Last Spring Freeze
February 17
50% probability date
Growing Season
290 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,112
Higher = more heating needed
Cooling Degree Days
3,587
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside TX closest to Hallettsville 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 (72°F here).
- Titusville, FL 72°F · 0.1°F off
- Apache Junction, AZ 72°F · 0.2°F off
- Daytona Beach, FL 72°F · 0.2°F off
- Fort Green, FL 72°F · 0.2°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (40.4" here), excluding temperature-peer places.
- Brunswick, MO 40.4" · 0.0" off
- Barrington, IL 40.4" · 0.0" off
- Allerton, IA 40.4" · 0.0" off
- Bloomington, IL 40.4" · 0.0" off
Data-derived climate profile
How Hallettsville's climate pattern fits together
cooling led · moderate · mid swing
Air-conditioning demand is the clearest thermal signal here. Hallettsville accumulates 3,587 cooling degree days, more than twice its 1,112 heating total; the monthly table shows when that imbalance builds rather than treating it as a year-round condition.
Hallettsville's 40.4 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Recorded annual snowfall is negligible. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
August and January mark the typical warm and cold ends of the calendar in Hallettsville's middle-range seasonal profile. The measured spread is 31.0°F. The annual average is 72°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
The frost-free window extends for about 290 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 Hallettsville'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 Hallettsville that means a descriptive range only — not an official NOAA classification and not a prediction for next summer.
Questions about Hallettsville's climate
How much rain does Hallettsville get? ▼
How many days above 90°F does Hallettsville get? ▼
How much energy does heating and cooling require in Hallettsville? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Hallettsville's primary station: HALLETTSVILLE 2 N (USC00413873). 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 4831868). Match rule for Hallettsville: 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 Hallettsville 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.