C. E. Foster House · Photo: Valis55 · CC BY-SA 3.0Precipitation in Acorn tops that of 95% of U.S. towns: 57 inches a year
The coldest hours of a January night bottom out at 29° on average. The wettest month is May; the driest is January. In July, afternoons here are warmer than in 79% of U.S. towns. The outdoor season, with highs of 71–84°, runs through April, May, September and October.
A year in Acorn at a glance
Each month’s typical high and low, and what it brings.
What stands out about Acorn’s climate
Compared with towns across the U.S., with Acorn’s place in Arkansas beside it.
What a year in Acorn feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 208 frost-free days a year
In half of years the last 32° night comes by April 5 and the first by November 1. Frost and day counts come from NOAA’s station at Mena, AR, 6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Acorn’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 10°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 4 inches of snow a winter
Snow, measured at Mena, AR, falls mostly in February. Precipitation (rain plus melted snow) adds up to 57 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 117 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Acorn
70% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Mena, AR.
Living with Acorn’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
208 frost-free days in zone 8a. The last frost comes by Apr 5 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 1.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Acorn from natural hazards, river flooding is the largest share (56%); heat waves, cold waves, winter storms and ice storms together are 14%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Acorn and similar climates
TownRatings has no climate map of the towns around Acorn yet.
Climates most like Acorn’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Acorn, AR | 29° | 90° | 57" | 4.0" |
| Humboldt, TN | 29° | 90° | 55" | 4.4" |
| Holly Springs, MS | 31° | 90° | 58" | 2.3" |
| Huntsville, AL | 31° | 90° | 56" | 2.4" |
| Winterville, NC | 33° | 90° | 53" | 3.3" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Acorn averaged 0.6° warmer than the 1900s. The biggest change is in December (+1.4°).
A smaller shift than in 96% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Acorn compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Acorn’s place among Arkansas’.
Acorn weather by month
Highs, lows and precipitation from NOAA’s grid at Acorn’s center; snow, wet days and snow on the ground from Mena, AR. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 50° | 29° | 3.8" | 0.8" | 10 | 0 | 35° – 46° |
| February | 55° | 32° | 3.8" | 1.8" | 10 | 1 | 36° – 52° |
| March | 63° | 39° | 5.1" | 0.8" | 11 | 0 | 45° – 60° |
| April | 71° | 47° | 5.6" | 0.0" | 10 | 0 | 54° – 65° |
| May | 78° | 56° | 6.6" | 0.0" | 11 | 0 | 64° – 73° |
| June | 86° | 64° | 4.7" | 0.0" | 10 | 0 | 71° – 80° |
| July | 90° | 68° | 4.1" | 0.0" | 10 | 0 | 74° – 84° |
| August | 90° | 67° | 4.1" | 0.0" | 8 | 0 | 72° – 84° |
| September | 84° | 60° | 4.4" | 0.0" | 8 | 0 | 68° – 79° |
| October | 73° | 48° | 4.7" | 0.0" | 9 | 0 | 55° – 67° |
| November | 61° | 39° | 5.0" | 0.0" | 10 | 0 | 43° – 56° |
| December | 52° | 31° | 4.8" | 0.6" | 10 | 0 | 32° – 48° |
| Year | 71° | 48° | 56.6" | 4.0" | 117 | 1 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 36° to 52°. May is the most reliable, staying within 9°.
Where Acorn’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Acorn’s center.
- Snow: Mena, AR.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Mena, AR, 6 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Acorn’s climate
What is the weather like in Acorn?
A typical July afternoon reaches 90°, a January night drops to 29°, and about 4 inches of snow falls in a normal winter. Milder January nights than 71% of U.S. towns; hotter July afternoons than 79% of U.S. towns.
How cold does it get in Acorn in winter?
January nights average 29°. About 80 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 35°.
How much snow does Acorn get?
About 4.0 inches in a normal winter at Mena, AR, most of it in February, with snow on the ground about 1 days a year.
How hot does it get in Acorn?
July, with a typical high of 90° and a low of 68°. About 46 days a year reach 90° and 3 reach 100° (Mena, AR).
When is the first and last frost in Acorn?
In half of years the last spring frost (32°) comes by April 5 and the first fall frost by November 1, about 208 frost-free days, at Mena, AR.
What growing zone is Acorn in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 10°.
What is the best time of year to visit Acorn?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Acorn getting warmer?
Yes: 1991–2020 averaged 0.6° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 96% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Acorn.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.