Dumas, Arkansas climate: Normal weather by month, frost dates and records
Dumas's normal year runs from 35°F January nights to 92°F July afternoons, with 51.2 inches of precipitation and less than an inch of snow (0.7 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.8°C, January lows of 2°C, July highs of 33°C, 1,300 mm of precipitation a year.
- NOAA stationDumas
- Station IDUSC00032148
- Location33.89°N 91.53°W
- Elevation163 ft (50 m)
- Population3,604
On October 22, the normal high in Dumas is 75°F and the normal low 51°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 Dumas.
- Jan 53° 35°
- Feb 58° 38°
- Mar 67° 45°
- Apr 76° 54°
- May 83° 62°
- Jun 90° 70°
- Jul 92° 72°
- Aug 91° 71°
- Sep 86° 64°
- Oct 77° 53°
- Nov 64° 44°
- Dec 56° 37°
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 Dumas each month?
July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 35°F. The most precipitation falls in April (5.54 in), the least in September (2.82 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 53°F | 35°F | 44.3°F | 4.45 | 7 | <1 | 14 | 10 h 10 min |
| February | 58°F | 38°F | 47.9°F | 4.65 | 7 | <1 | 10 | 11 h |
| March | 67°F | 45°F | 55.8°F | 5.21 | 8 | <1 | 3 | 11 h 50 min |
| April | 76°F | 54°F | 64.6°F | 5.54 | 7 | <1 | <1 | 13 h |
| May | 83°F | 62°F | 72.6°F | 4.92 | 8 | 4 | <1 | 13 h 50 min |
| June | 90°F | 70°F | 79.6°F | 3.31 | 6 | 17 | <1 | 14 h 20 min |
| July | 92°F | 72°F | 81.8°F | 3.37 | 6 | 22 | <1 | 14 h 10 min |
| August | 91°F | 71°F | 80.9°F | 2.90 | 5 | 21 | <1 | 13 h 30 min |
| September | 86°F | 64°F | 75.2°F | 2.82 | 5 | 9 | <1 | 12 h 30 min |
| October | 77°F | 53°F | 64.9°F | 4.43 | 6 | 1 | <1 | 11 h 20 min |
| November | 64°F | 44°F | 54.0°F | 4.15 | 6 | <1 | 4 | 10 h 30 min |
| December | 56°F | 37°F | 46.4°F | 5.43 | 7 | <1 | 12 | 10 h |
| Year (annual) | 74°F | 54°F | 64.0°F | 51.18 | 78 | 74 | 42 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 12°C | 2°C | 6.8°C | 113 mm |
| February | 14°C | 3°C | 8.8°C | 118 mm |
| March | 19°C | 7°C | 13.2°C | 132 mm |
| April | 24°C | 12°C | 18.1°C | 141 mm |
| May | 28°C | 17°C | 22.6°C | 125 mm |
| June | 32°C | 21°C | 26.4°C | 84 mm |
| July | 33°C | 22°C | 27.7°C | 86 mm |
| August | 33°C | 21°C | 27.2°C | 74 mm |
| September | 30°C | 18°C | 24.0°C | 72 mm |
| October | 25°C | 12°C | 18.3°C | 113 mm |
| November | 18°C | 6°C | 12.2°C | 105 mm |
| December | 13°C | 3°C | 8.0°C | 138 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00032148; 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 Dumas?
Normal highs sit between 65°F and 85°F in March, April, May and October. Of those, October has the fewest days with rain (6).
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 USC00032148.
When is the last frost in Dumas?
In Dumas, the last spring frost (32°F) comes after March 12 in half of years and after March 29 in one year in ten; the first autumn frost comes before November 14 in half of years and before October 30 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 121 year in 10 after March 29; 9 in 10 after February 24
- First autumn frost, half of years before
- November 141 year in 10 before October 30; 9 in 10 before December 2
NOAA puts the median frost-free season at 245 days, and the season without a hard freeze (28°F) at 271 days.
A hard freeze (28°F) comes after March 2 in half of springs and before November 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Dumas in zone 8b in ZIP code 71639, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Dumas's NOAA station is in zone 8b: the coldest night of a typical year reaches 16°F (16 complete years).
Frost dates for every NOAA station in Arkansas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00032148; 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 Dumas?
In a normal year in Dumas, 74 days a year reach 90°F (2 of them 100°F or more), 42 nights fall to 32°F or colder and 78 days bring measurable precipitation.
- Days at 90°F or more
- 74a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 42a normal year
- Days that stay below freezing
- 3high of 32°F or less
- Days with 0.01 inch of precipitation
- 78a normal year
The highest temperature in this station's record (since 1915) is 112°F, on August 10, 1936; the lowest is −5°F, on January 12, 1962.
The wettest calendar year on that record is 2009, with 76.42 in; the snowiest season is 1950–51, with 15.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00032148; records: ACIS (NOAA Regional Climate Centers), station USC00032148. Records use complete months only; a month missing more than three days is left out.
How sunny is Dumas?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Dumas, 4.6 kWh per square metre a day. June is the sunniest month (84%) and February the cloudiest (65%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 2.6 |
| February | 65% | 3.1 |
| March | 72% | 4.3 |
| April | 76% | 5.4 |
| May | 78% | 6.0 |
| June | 84% | 6.6 |
| July | 83% | 6.3 |
| August | 83% | 5.8 |
| September | 82% | 5.1 |
| October | 80% | 4.0 |
| November | 76% | 3.0 |
| December | 69% | 2.3 |
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 Dumas need?
A normal year in Dumas brings 2,586 heating degree days, 52% fewer than the median U.S. place (5,373), and 2,255 cooling degree days, 2.5 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 5,829 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 643 | 2 |
| February | 484 | 4 |
| March | 307 | 22 |
| April | 101 | 90 |
| May | 14 | 250 |
| June | 0 | 438 |
| July | 0 | 522 |
| August | 0 | 494 |
| September | 7 | 312 |
| October | 103 | 102 |
| November | 348 | 17 |
| December | 578 | 3 |
| Year (annual) | 2,586 | 2,255 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00032148. 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 Dumas's climate compare?
Dumas is warmer than 80 of the other 85 places with their own NOAA record in Arkansas, and wetter than 36. Across the 7,247 U.S. stations with normals, its annual mean of 64.0°F is warmer than 85%.
In the Köppen classification computed from these normals, Dumas 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 Dumas 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.
- Gould, AR626 people · 7 mi N
- Mitchellville, AR259 people · 2 mi NE
- Winchester, AR133 people · 9 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 Dumas's climate
What is the coldest month in Dumas?
January, with a normal high of 53°F and a normal low of 35°F. The warmest is July (92°F by day, 72°F at night).
Does it snow in Dumas?
Rarely: NOAA's normal is 0.7 inch a year.
What is the rainiest month in Dumas?
April, with 5.54 in of precipitation in a normal year; the driest is September with 2.82 in.
What plant hardiness zone is Dumas in?
The USDA's 2023 map puts Dumas in zone 8b in ZIP code 71639, the nearest ZIP area. By the same method at Dumas's NOAA station, the coldest night of a typical year reaches 16°F (16 years, 1991-2020): zone 8b.
How late can frost come in Dumas?
In half of years the last 32°F night comes after March 12; in one year in ten it comes after March 29. Waiting until March 29 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arkansas climateThe statewide normals and every place in the state
- Cane Creek State Park, AR14 miles from this station, 63.6°F a year
- Arkansas Post, AR14 miles from this station, 63.5°F a year
- Rohwer (2 mi NNE), AR16 miles from this station, 62.9°F a year
- Monticello, AR22 miles from this station, 64.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made