Santa Rosa, TX 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 Santa Rosa's primary NOAA station, SANTA ROSA 3 WNW.
The climate verdict for Santa Rosa
Warm-season cooling demand defines Santa Rosa, Texas, running at more than twice its heating total. The NOAA normal records an annual average of 75°F. It scores 100/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 99% of them.
- 75°F
- annual average temperature (NOAA normal)
- 100/100
- comfort score, above 99% of station-mapped location scores
- 24.6"
- yearly precipitation total
- 351 days
- growing season, frost-free days
Santa Rosa: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00418059 · Santa Rosa, TX 75°F mean · 24.6" precip
TEMP-HOT · RANK-WARM · PHOTO-FINISH · PRCP-DRY · SWING-NARROW · COMF-TOP · LOAD-COOL · STN-1 · BOOK-FULL
- TEMP-HOT 75°F
- RANK-WARM #6,792
- PHOTO-FINISH ≈ Edinburg
- PRCP-DRY 24.6"
- SWING-NARROW 26°F
- COMF-TOP 100/100
- LOAD-COOL 4,194 CDD
- STN-1 USC00418059
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Edinburg, TX (+ 0.2 °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.
- Santa Rosa (this station) 75°F
- Hot Weslaco, TX 75°F
- Near Edinburg, TX 75°F
- Near Harlingen Rio G…, TX 75°F
- Cold Raymondville, TX 74°F
Santa Rosa 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 · Santa Rosa
Santa Rosa: 70/100 · grade B
Santa Rosa publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Santa Rosa, not an official NOAA rating. Rankings still use Comfort Score 100/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 351 days/year | 100/100 · A |
| Snowfall burden | 0.1 inches/year | 89/100 · A |
| Annual temperature balance | 74.7°F · 7.2° from 67.5°F | 77/100 · B |
| Precipitation balance | 24.6 in · 10.4 from 35 in | 63/100 · C |
| Normal heat + freeze calendar | 146 calendar days | 49/100 · D |
Santa Rosa · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Santa Rosa is a temperate Köppen climate: Cfa
Coldest-month mean 60.1°F and warmest-month mean 86.4°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
- 86.4°F
- Coldest month
- 60.1°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 Santa Rosa sits across the climate record
Three NOAA fields for Santa Rosa's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 1% warmest
- Among 6,861 stations, Santa Rosa sits in the warmer third of annual means.
- Annual precipitation
- 34th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 94%
- Warmest-to-coldest month gap for Santa Rosa is compact versus 6,861 complete station-years.
How Santa Rosa compares across U.S. station-mapped locations
Santa Rosa's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
100 Top 1% score exceeds 99% 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 71°F (22°C) | 49°F (9°C) | 60°F (16°C) | 1.1" | 0.0" | 0.7 | 0.2 |
| February | 76°F (24°C) | 53°F (12°C) | 64°F (18°C) | 1.0" | 0.0" | 0.5 | 1.3 |
| March | 81°F (27°C) | 58°F (15°C) | 70°F (21°C) | 1.4" | 0.0" | 0.0 | 4.1 |
| April | 86°F (30°C) | 64°F (18°C) | 75°F (24°C) | 1.4" | 0.0" | 0.0 | 10.6 |
| May | 91°F (33°C) | 71°F (22°C) | 81°F (27°C) | 2.5" | 0.0" | 0.0 | 20.1 |
| June | 95°F (35°C) | 75°F (24°C) | 85°F (29°C) | 2.9" | 0.0" | 0.0 | 27.6 |
| July | 96°F (36°C) | 76°F (24°C) | 86°F (30°C) | 1.7" | 0.0" | 0.0 | 29.5 |
| August | 97°F (36°C) | 75°F (24°C) | 86°F (30°C) | 2.1" | 0.0" | 0.0 | 29.7 |
| September | 93°F (34°C) | 72°F (22°C) | 82°F (28°C) | 5.6" | 0.0" | 0.0 | 23.0 |
| October | 88°F (31°C) | 65°F (18°C) | 77°F (25°C) | 2.7" | 0.0" | 0.0 | 16.5 |
| November | 80°F (27°C) | 57°F (14°C) | 68°F (20°C) | 1.2" | 0.0" | 0.0 | 3.3 |
| December | 73°F (23°C) | 50°F (10°C) | 62°F (16°C) | 1.1" | 0.1" | 0.5 | 0.2 |
The year, day by day
The year in Santa Rosa runs from a mild 48°F around January 3 to 98°F at the peak near August 7, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from May 14 through October 6, covering 146 dates. The broader mild season, normal highs of 70°F or more, runs January 1 to December 31.
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 48°F around January 3.
Where the wet dates fall
The likeliest wet date is September 9, when 32% of years recorded at least a hundredth of an inch. The driest is July 26 at 11%. Summed across the calendar, that is about 71 wet dates a year.
The widest day
October 21 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 Santa Rosa.
Where Santa Rosa Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 146 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Santa Rosa 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
7.0 days with precipitation
5.5 days with precipitation
5.8 days with precipitation
4.7 days with precipitation
4.6 days with precipitation
5.2 days with precipitation
3.8 days with precipitation
5.2 days with precipitation
9.4 days with precipitation
6.1 days with precipitation
5.7 days with precipitation
Snow: 0.1"
7.2 days with precipitation
Santa Rosa spreads its precipitation across the year
Neither half of the year dominates here: June through August take 27% of the annual total and December through February 13%, with neither reaching the 35% that would mark a distinct wet season. Santa Rosa has no dry season to plan around, though it does carry an unusually narrow 26.3°F seasonal spread.
The gap between the wettest and driest month still matters: September averages 5.6" and February 1.0". The three wettest months together take 45% 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 Santa Rosa, it arrives in quantity
24.6" of precipitation falls across only about 70 wet days here, averaging 0.35 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 70 a year, 19% of all days
- Average depth per wet day
- 0.35 inches
- Most wet days
- September, about 9
- Fewest wet days
- July, about 4
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 Santa Rosa, 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 27
50% probability date
Last Spring Freeze
January 10
50% probability date
Growing Season
351 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
643
Higher = more heating needed
Cooling Degree Days
4,194
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside TX closest to Santa Rosa 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 (75°F here).
- Gila Bend, AZ 75°F · 0.0°F off
- Immokalee, FL 75°F · 0.0°F off
- Yuma Proving Ground, AZ 75°F · 0.1°F off
- Okeechobee, FL 75°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (24.6" here), excluding temperature-peer places.
- Forestburg, SD 24.6" · 0.0" off
- Wilmot, SD 24.6" · 0.0" off
- Beaver City, NE 24.6" · 0.0" off
- Watertown, SD 24.6" · 0.0" off
Data-derived climate profile
How Santa Rosa's climate pattern fits together
cooling led · moderate · low swing
Warm-season load persists through a relatively even calendar in Santa Rosa. Cooling totals 4,194 degree days, more than double the 643 heating measure, and the 26.3°F seasonal range is compact rather than sharply divided.
Santa Rosa's 24.6 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.
Temperature varies within a narrow 26.3°F band across the normal year. August and January mark the typical warm and cold ends of the calendar. The annual average is 75°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
With about 351 frost-free days, the calendar is constrained more by sustained heat than by freeze timing. This does not measure crop suitability or soil moisture; it only reports the NOAA-derived frost-free window for Santa Rosa.
These labels group NOAA 1991-2020 normals from Santa Rosa'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 Santa Rosa that means a descriptive range only — not an official NOAA classification and not a prediction for next summer.
Questions about Santa Rosa's climate
How much rain does Santa Rosa get? ▼
How many days above 90°F does Santa Rosa get? ▼
How much energy does heating and cooling require in Santa Rosa? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Santa Rosa's primary station: SANTA ROSA 3 WNW (USC00418059). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The exact name-and-state crosswalk returns more than one Census place, so PlainClimate leaves the place identity unresolved. Because Santa Rosa hits multiple Gazetteer rows, PlainClimate refuses to pick one and shows the unresolved badge instead of inventing a GEOID.
On this page every temperature, precipitation, and derived score for Santa Rosa 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.