Semmes, AL climate
Semmes has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 91°, a January night drops to 40°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Semmes feels like
Winter
Spring
Summer
Fall
Semmes 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 | 62° | 40° | 5.8" | 0 | 10 | 0 | 43° – 58° |
| February | 66° | 43° | 4.6" | 0 | 9 | 0 | 45° – 64° |
| March | 72° | 49° | 5.3" | 0.1" | 9 | 0 | 55° – 68° |
| April | 78° | 55° | 5.4" | 0 | 8 | 0 | 62° – 70° |
| May | 85° | 63° | 5.1" | 0 | 8 | 0 | 71° – 76° |
| June | 90° | 70° | 6.5" | 0 | 12 | 0 | 77° – 83° |
| July | 91° | 72° | 7.2" | 0 | 15 | 0 | 79° – 84° |
| August | 91° | 71° | 6.4" | 0 | 13 | 0 | 78° – 84° |
| September | 88° | 67° | 5.1" | 0 | 9 | 0 | 75° – 82° |
| October | 80° | 56° | 3.9" | 0 | 7 | 0 | 64° – 73° |
| November | 70° | 46° | 4.4" | 0 | 8 | 0 | 53° – 63° |
| December | 64° | 42° | 5.4" | 0.1" | 9 | 0 | 46° – 61° |
| Year | 78° | 56° | 65.2" | 0.2" | 117 | 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 Semmes
Semmes gets 65 inches of rain and melted snow a year. July is the wettest month and October the driest. Rain or snow falls on about 117 days a year.
About 268 frost-free days a year
In half of years the last 32° night comes by March 3 and the first one by November 25. That leaves about 268 frost-free days for gardens, longer than 93% of U.S. towns.
Heating and cooling a home in Semmes
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Semmes, 38% of that work is heating and 62% is cooling, so air conditioning is the bigger bill.
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.
Semmes and its neighbors
Semmes borders 1 town with climate data. January nights across them vary by 1.4°. Mobile has both the coldest January nights (41°) and the hottest July afternoons (91°). Semmes’s January low is 40° and its July high 91°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Semmes 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 Semmes averaged 0.8° warmer than the 1900s. The biggest change is in February (+1.3°). The shift is smaller than in 85% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Semmes’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 45° to 64°. July is the most reliable, staying within 5°.
Common questions about Semmes’s climate
What is the coldest month in Semmes?
January, with a typical high of 62° and a low of 40°.
What is the hottest month in Semmes?
July, with a typical high of 91° and a low of 72°. About 78 days a year reach 90°.
How much snow does Semmes get?
Almost none. A normal year brings 0.2 inches.
When is the first frost in Semmes?
In half of years the first 32° night comes by November 25, and the last spring frost by March 3.
What is the rainiest month in Semmes?
July, with 7.2 inches of rain and melted snow. The year totals 65 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Semmes itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Mobile, AL (8 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.