Blue Mountain, Arkansas climate: Normal weather by month, frost dates and records
Blue Mountain's normal year runs from 28°F January nights to 93°F July afternoons, with 49.6 inches of precipitation and 2 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.8°C, January lows of −2°C, July highs of 34°C, 1,261 mm of precipitation a year.
- NOAA stationBlue Mountain Dam
- Station IDUSC00030798
- Location35.12°N 93.65°W
- Elevation426 ft (130 m)
- From the center4 miles
- Population82
On October 14, the normal high in Blue Mountain is 76°F and the normal low 49°F, and the chance of measurable rain or snow is 24%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Blue Mountain.
- Jan 50° 28°
- Feb 56° 31°
- Mar 64° 38°
- Apr 73° 47°
- May 80° 57°
- Jun 88° 65°
- Jul 93° 69°
- Aug 93° 68°
- Sep 86° 60°
- Oct 75° 48°
- Nov 62° 38°
- Dec 52° 30°
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 Blue Mountain each month?
July is the warmest month, with normal highs of 93°F; January the coldest, with normal lows of 28°F. The most precipitation falls in May (5.05 in), the least in February (3.36 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 50°F | 28°F | 39.0°F | 3.40 | 0.6 | 8 | <1 | 20 | 10 h |
| February | 56°F | 31°F | 43.4°F | 3.36 | 0.6 | 8 | <1 | 15 | 10 h 50 min |
| March | 64°F | 38°F | 51.2°F | 4.86 | 0.7 | 10 | <1 | 7 | 11 h 50 min |
| April | 73°F | 47°F | 60.2°F | 4.91 | 0.0 | 9 | <1 | 1 | 13 h |
| May | 80°F | 57°F | 68.6°F | 5.05 | 0.0 | 10 | 3 | <1 | 14 h |
| June | 88°F | 65°F | 76.8°F | 3.70 | 0.0 | 8 | 14 | <1 | 14 h 30 min |
| July | 93°F | 69°F | 80.9°F | 3.79 | 0.0 | 8 | 23 | <1 | 14 h 20 min |
| August | 93°F | 68°F | 80.2°F | 3.62 | 0.0 | 7 | 22 | <1 | 13 h 30 min |
| September | 86°F | 60°F | 72.8°F | 3.96 | 0.0 | 7 | 10 | <1 | 12 h 30 min |
| October | 75°F | 48°F | 61.7°F | 3.84 | 0.0 | 8 | 2 | 1 | 11 h 20 min |
| November | 62°F | 38°F | 50.2°F | 4.64 | 0.0 | 8 | <1 | 8 | 10 h 20 min |
| December | 52°F | 30°F | 41.4°F | 4.52 | 0.1 | 8 | <1 | 18 | 9 h 50 min |
| Year (annual) | 73°F | 48°F | 60.5°F | 49.65 | 2.0 | 97 | 74 | 71 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 10°C | −2°C | 3.9°C | 86 mm | 2 cm |
| February | 13°C | 0°C | 6.3°C | 85 mm | 2 cm |
| March | 18°C | 4°C | 10.7°C | 123 mm | 2 cm |
| April | 23°C | 8°C | 15.7°C | 125 mm | 0 cm |
| May | 27°C | 14°C | 20.3°C | 128 mm | 0 cm |
| June | 31°C | 19°C | 24.9°C | 94 mm | 0 cm |
| July | 34°C | 21°C | 27.2°C | 96 mm | 0 cm |
| August | 34°C | 20°C | 26.8°C | 92 mm | 0 cm |
| September | 30°C | 16°C | 22.7°C | 101 mm | 0 cm |
| October | 24°C | 9°C | 16.5°C | 98 mm | 0 cm |
| November | 17°C | 3°C | 10.1°C | 118 mm | 0 cm |
| December | 11°C | −1°C | 5.2°C | 115 mm | 0 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00030798; 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 Blue Mountain?
Normal highs sit between 65°F and 85°F in April, May and October. Of those, October has the fewest days with rain (8).
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 USC00030798.
When is the last frost in Blue Mountain?
In Blue Mountain, the last spring frost (32°F) comes after March 31 in half of years and after April 17 in one year in ten; the first autumn frost comes before November 1 in half of years and before October 18 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 311 year in 10 after April 17; 9 in 10 after March 12
- First autumn frost, half of years before
- November 11 year in 10 before October 18; 9 in 10 before November 17
NOAA puts the median frost-free season at 215 days, and the season without a hard freeze (28°F) at 238 days.
A hard freeze (28°F) comes after March 17 in half of springs and before November 12 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Blue Mountain in zone 8a in ZIP code 72943, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Blue Mountain's NOAA station is in zone 8a: the coldest night of a typical year reaches 11°F (28 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 USC00030798; 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 Blue Mountain?
In a normal year in Blue Mountain, 74 days a year reach 90°F (12 of them 100°F or more), 71 nights fall to 32°F or colder and 97 days bring measurable precipitation.
- Days at 90°F or more
- 74a normal year
- Days at 100°F or more
- 12a normal year
- Nights at 32°F or colder
- 71a normal year
- Days that stay below freezing
- 4high of 32°F or less
- Days with 0.01 inch of precipitation
- 97a normal year
- Days with 1 inch of snow or more
- 1a normal year
The highest temperature in this station's record (since 1967) is 114°F, on August 4, 2011; the lowest is −3°F, on January 11, 1977.
The wettest calendar year on that record is 1973, with 69.41 in; the snowiest season is 1977–78, with 15.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00030798; records: ACIS (NOAA Regional Climate Centers), station USC00030798. Records use complete months only; a month missing more than three days is left out.
How sunny is Blue Mountain?
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Blue Mountain, 4.4 kWh per square metre a day. July is the sunniest month (82%) and February the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.5 |
| February | 66% | 3.0 |
| March | 69% | 4.1 |
| April | 72% | 5.2 |
| May | 73% | 5.7 |
| June | 81% | 6.5 |
| July | 82% | 6.3 |
| August | 82% | 5.8 |
| September | 81% | 5.0 |
| October | 77% | 3.8 |
| November | 74% | 2.7 |
| December | 70% | 2.2 |
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 Blue Mountain need?
A normal year in Blue Mountain brings 3,448 heating degree days, 36% fewer than the median U.S. place (5,373), and 1,851 cooling degree days, 2.0 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 5,003 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 806 | 1 |
| February | 607 | 1 |
| March | 437 | 9 |
| April | 185 | 43 |
| May | 44 | 155 |
| June | 1 | 355 |
| July | 0 | 495 |
| August | 0 | 473 |
| September | 17 | 251 |
| October | 166 | 62 |
| November | 452 | 6 |
| December | 732 | 1 |
| Year (annual) | 3,448 | 1,851 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00030798. 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.
Has Blue Mountain been warmer than normal lately?
2021 averaged 60.7°F, 0.2°F above the 1991-2020 normal of 60.5°F.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 60.7°F | +0.2°F | 44.30 | 8.0 |
Over 50 complete years from 1967 to 2023, the station's annual mean temperature rose at a fitted 2.9°F per century (+0.16°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00030798; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Blue Mountain's climate compare?
Blue Mountain is warmer than 31 of the other 85 places with their own NOAA record in Arkansas, and wetter than 23. Across the 7,247 U.S. stations with normals, its annual mean of 60.5°F is warmer than 76%.
In the Köppen classification computed from these normals, Blue Mountain 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 Blue Mountain 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.
- Belleville, AR313 people · 12 mi E
- Havana, AR239 people · 7 mi E
- Corinth, AR41 people · 13 mi E
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 Blue Mountain's climate
What is the coldest month in Blue Mountain?
January, with a normal high of 50°F and a normal low of 28°F. The warmest is July (93°F by day, 69°F at night).
Does it snow in Blue Mountain?
Yes: 2 inches in a normal year, falling on 1 days with 0.1 inch or more, the most in March (0.7 inches).
What is the rainiest month in Blue Mountain?
May, with 5.05 in of precipitation in a normal year; the driest is February with 3.36 in.
What plant hardiness zone is Blue Mountain in?
The USDA's 2023 map puts Blue Mountain in zone 8a in ZIP code 72943, the nearest ZIP area. By the same method at Blue Mountain's NOAA station, the coldest night of a typical year reaches 11°F (28 years, 1991-2020): zone 8a.
How late can frost come in Blue Mountain?
In half of years the last 32°F night comes after March 31; in one year in ten it comes after April 17. Waiting until April 17 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arkansas climateThe statewide normals and every place in the state
- Subiaco, AR13 miles from this station, 60.7°F a year
- Booneville, AR16 miles from this station, 60.5°F a year
- Clarksville, AR29 miles from this station, 60.8°F a year
- Waldron, AR29 miles from this station, 60.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made