Arnold Line, MS climate
Arnold Line has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 92°, a January night drops to 37°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Arnold Line feels like
Winter
Spring
Summer
Fall
Arnold Line weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 60° | 37° | 6.0" | 0.2" | 11 | 0 | 42° – 56° |
| February | 65° | 41° | 5.4" | 0.1" | 11 | 0 | 43° – 61° |
| March | 72° | 47° | 5.7" | 0.1" | 9 | 0 | 53° – 67° |
| April | 78° | 53° | 5.3" | 0 | 8 | 0 | 60° – 70° |
| May | 85° | 61° | 4.5" | 0 | 9 | 0 | 70° – 76° |
| June | 90° | 68° | 5.2" | 0 | 11 | 0 | 77° – 83° |
| July | 92° | 71° | 5.9" | 0 | 13 | 0 | 79° – 83° |
| August | 92° | 70° | 5.4" | 0 | 11 | 0 | 78° – 84° |
| September | 88° | 66° | 4.4" | 0 | 9 | 0 | 74° – 82° |
| October | 80° | 54° | 3.7" | 0 | 6 | 0 | 62° – 72° |
| November | 69° | 44° | 3.9" | 0 | 7 | 0 | 51° – 62° |
| December | 62° | 39° | 5.6" | 0.5" | 10 | 0 | 42° – 59° |
| Year | 78° | 54° | 60.8" | 0.9" | 116 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Arnold Line
Arnold Line gets 61 inches of rain and melted snow a year. January is the wettest month and October the driest. Rain or snow falls on about 116 days a year.
About 261 frost-free days a year
In half of years the last 32° night comes by March 7 and the first one by November 23. That leaves about 261 frost-free days for gardens, longer than 92% of U.S. towns.
Heating and cooling a home in Arnold Line
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Arnold Line, 44% of that work is heating and 56% is cooling.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Arnold Line and its neighbors
Arnold Line borders 1 town with climate data. January nights across them vary by 0.2°. Hattiesburg has both the coldest January nights (38°) and the hottest July afternoons (92°). Arnold Line’s January low is 37° and its July high 92°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Arnold Line compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Arnold Line averaged 0.5° warmer than the 1900s. The biggest change is in February (+1.3°). The shift is smaller than in 97% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Arnold Line’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 43° to 61°. July is the most reliable, staying within 5°.
Common questions about Arnold Line’s climate
What is the coldest month in Arnold Line?
January, with a typical high of 60° and a low of 37°.
What is the hottest month in Arnold Line?
July, with a typical high of 92° and a low of 71°. About 85 days a year reach 90°.
How much snow does Arnold Line get?
Almost none. A normal year brings 0.9 inches.
When is the first frost in Arnold Line?
In half of years the first 32° night comes by November 23, and the last spring frost by March 7.
What is the rainiest month in Arnold Line?
January, with 6.0 inches of rain and melted snow. The year totals 61 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Arnold Line itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Hattiesburg 5sw, MS (6 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.