Saint Charles, AR 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 Saint Charles's primary NOAA station, SAINT CHARLES.
The climate verdict for Saint Charles
Water is the standout signal in Saint Charles, Arkansas: 51.9 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 62°F. It scores 83/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 81% of them.
- 62°F
- average temperature, NOAA 1991-2020 normal
- 83/100
- comfort score, above 81% of station-mapped location scores
- 51.9"
- annual precipitation · 1" snow
- 238 days
- growing season, frost-free days
Saint Charles: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00036376 · Saint Charles, AR 62°F mean · 51.9" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 62°F
- RANK-UPPER #5,489
- PHOTO-FINISH ≈ Anderson
- PRCP-WET 51.9"
- SWING-MID 40°F
- COMF-TOP 83/100
- LOAD-MIX H/C balanced
- STN-1 USC00036376
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Anderson, SC (+ 0 °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 AR station list.
- Saint Charles (this station) 62°F
- Hot Dequeen, AR 62°F
- Near Anderson, SC 62°F
- Near Concord Buchana…, CA 62°F
- Near Cordes, AZ 62°F
Climate Living Index · Saint Charles
Saint Charles: 79/100 · grade B
Saint Charles publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Saint Charles, not an official NOAA rating. Rankings still use Comfort Score 83/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 35 calendar days | 95/100 · A |
| Frost-free season | 238 days/year | 84/100 · B |
| Annual temperature balance | 62.0°F · 5.5° from 67.5°F | 83/100 · B |
| Snowfall burden | 1.2 inches/year | 81/100 · B |
| Precipitation balance | 51.9 in · 16.9 from 35 in | 40/100 · D |
Saint Charles · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Saint Charles is a temperate Köppen climate: Cfa
Coldest-month mean 41.3°F and warmest-month mean 80.8°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
- 80.8°F
- Coldest month
- 41.3°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 · balanced station
Where Saint Charles sits across the climate record
Three NOAA fields for Saint Charles's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 20% warmest
- Among 6,861 stations, Saint Charles sits in the warmer third of annual means.
- Annual precipitation
- Top 15% wettest
- Saint Charles's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- 34th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Saint Charles compares across U.S. station-mapped locations
Saint Charles's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
83 Top 19% score exceeds 81% 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%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Saint Charles's measured station temperature trend
MethodologyAcross 38 complete annual observations from 1938 to 2024, SAINT CHARLES warmed at a fitted rate of 0.11°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Saint Charles primary station fitted change +0.11 °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 | 50°F (10°C) | 33°F (0°C) | 41°F (5°C) | 4.4" | 0.6" | 17.0 | 0.0 |
| February | 55°F (13°C) | 36°F (2°C) | 45°F (7°C) | 4.7" | 0.2" | 11.3 | 0.0 |
| March | 64°F (18°C) | 44°F (6°C) | 54°F (12°C) | 5.7" | 0.4" | 4.8 | 0.0 |
| April | 72°F (22°C) | 52°F (11°C) | 62°F (17°C) | 5.9" | 0.0" | 0.3 | 0.1 |
| May | 80°F (27°C) | 61°F (16°C) | 70°F (21°C) | 4.5" | 0.0" | 0.0 | 2.1 |
| June | 87°F (31°C) | 69°F (20°C) | 78°F (25°C) | 3.5" | 0.0" | 0.0 | 13.9 |
| July | 90°F (32°C) | 72°F (22°C) | 81°F (27°C) | 3.8" | 0.0" | 0.0 | 20.9 |
| August | 90°F (32°C) | 70°F (21°C) | 80°F (27°C) | 2.8" | 0.0" | 0.0 | 18.9 |
| September | 85°F (29°C) | 63°F (17°C) | 74°F (23°C) | 3.0" | 0.0" | 0.0 | 11.1 |
| October | 75°F (24°C) | 51°F (11°C) | 63°F (17°C) | 3.8" | 0.0" | 0.5 | 1.4 |
| November | 62°F (17°C) | 42°F (5°C) | 52°F (11°C) | 4.5" | 0.0" | 6.3 | 0.0 |
| December | 53°F (12°C) | 35°F (2°C) | 44°F (7°C) | 5.3" | 0.0" | 13.5 | 0.0 |
The year, day by day
The year in Saint Charles runs from a mild 32°F around January 13 to 91°F at the peak near July 27, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from July 12 through August 15, covering 35 dates. The broader mild season, normal highs of 70°F or more, runs April 6 to October 27.
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 32°F around January 13.
Where the wet dates fall
The likeliest wet date is February 22, when 26% of years recorded at least a hundredth of an inch. The driest is September 14 at 14%. Summed across the calendar, that is about 73 wet dates a year.
The widest day
October 12 carries the biggest normal gap between afternoon and dawn, 24°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Saint Charles.
Where Saint Charles Stands Nationally
The normal water year runs well above the national norm at roughly 52 inches.
Saint Charles 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
Snow: 0.6"
6.7 days with precipitation
Snow: 0.2"
7.2 days with precipitation
Snow: 0.4"
7.0 days with precipitation
7.0 days with precipitation
7.4 days with precipitation
5.2 days with precipitation
5.9 days with precipitation
5.0 days with precipitation
4.2 days with precipitation
4.9 days with precipitation
5.8 days with precipitation
6.1 days with precipitation
Saint Charles spreads its precipitation across the year
Neither half of the year dominates here: June through August take 19% of the annual total and December through February 28%, with neither reaching the 35% that would mark a distinct wet season. Saint Charles has no dry season to plan around, though it does carry a 39.5°F seasonal spread.
The gap between the wettest and driest month still matters: April averages 5.9" and August 2.8". 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 Saint Charles, it arrives in quantity
51.9" of precipitation falls across only about 72 wet days here, averaging 0.72 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 72 a year, 20% of all days
- Average depth per wet day
- 0.72 inches
- Most wet days
- May, about 7
- Fewest wet days
- September, 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 Saint Charles, but rarely amounts to much
The normals record 1.2 inches of snow a year here, most likely in January. 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 1 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
November 10
50% probability date
Last Spring Freeze
March 17
50% probability date
Growing Season
238 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,050
Higher = more heating needed
Cooling Degree Days
1,974
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside AR closest to Saint Charles 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 (62°F here).
- Anderson, SC 62°F · 0.0°F off
- Eupora, MS 62°F · 0.0°F off
- Lawton, OK 62°F · 0.0°F off
- Lugoff, SC 62°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (51.9" here), excluding temperature-peer places.
- Jackson, KY 51.9" · 0.0" off
- Lehighton, PA 51.9" · 0.0" off
- Live Oak, FL 51.9" · 0.0" off
- Marble Hill, MO 51.9" · 0.0" off
Data-derived climate profile
How Saint Charles's climate pattern fits together
mixed demand · wet · mid swing
Water is prominent even though neither heating nor cooling wholly defines the record. Saint Charles averages 51.9 inches of precipitation a year. Annual snowfall totals 1.2 inches. The monthly table supplies the seasonal distribution hidden by that annual total.
July and January mark the typical warm and cold ends of the calendar in Saint Charles's middle-range seasonal profile. The measured spread is 39.5°F. The annual average is 62°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Saint Charles's normal, at 3,050 and 1,974 degree days respectively. Neither total exceeds the other by more than two to one, so the record is better read as a mixed-demand calendar than as heating-led or cooling-led.
A roughly 238-day frost-free season sits inside this mixed heating-and-cooling profile. Start and end dates matter because both sides of the thermostat register during a normal year.
These labels group NOAA 1991-2020 normals from Saint Charles's primary station, where heating and cooling demand are close enough that neither season sets the character on its own. On a balanced station like Saint Charles, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Saint Charles's climate
How much rain does Saint Charles get? ▼
How many days above 90°F does Saint Charles get? ▼
How much energy does heating and cooling require in Saint Charles? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Saint Charles's primary station: SAINT CHARLES (USC00036376). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Saint Charles; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Saint Charles 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.