Hamilton, Alabama climate: Normal weather by month, frost dates and records
Hamilton's normal year runs from 28°F January nights to 92°F July afternoons, with 61.7 inches of precipitation and 1 inch of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.9°C, January lows of −2°C, July highs of 33°C, 1,567 mm of precipitation a year.
- NOAA stationHamilton (3 mi S)
- Station IDUSC00013645
- Location34.10°N 87.99°W
- Elevation435 ft (133 m)
- Population6,944
On October 22, the normal high in Hamilton is 74°F and the normal low 44°F, and the chance of measurable rain or snow is 23%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Hamilton.
- Jan 53° 28°
- Feb 58° 31°
- Mar 67° 38°
- Apr 75° 45°
- May 82° 55°
- Jun 89° 64°
- Jul 92° 68°
- Aug 91° 67°
- Sep 87° 60°
- Oct 76° 47°
- Nov 64° 36°
- Dec 55° 31°
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 Hamilton each month?
July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 28°F. The most precipitation falls in December (6.42 in), the least in October (3.84 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 53°F | 28°F | 40.4°F | 5.46 | 0.4 | 11 | <1 | 22 | 10 h 10 min |
| February | 58°F | 31°F | 44.3°F | 6.01 | 0.4 | 10 | <1 | 18 | 11 h |
| March | 67°F | 38°F | 52.1°F | 5.29 | 0.3 | 11 | <1 | 13 | 11 h 50 min |
| April | 75°F | 45°F | 60.1°F | 6.09 | 0.0 | 9 | 1 | 4 | 13 h |
| May | 82°F | 55°F | 68.5°F | 5.79 | 0.0 | 9 | 4 | <1 | 13 h 50 min |
| June | 89°F | 64°F | 76.3°F | 4.86 | 0.0 | 10 | 16 | <1 | 14 h 20 min |
| July | 92°F | 68°F | 79.8°F | 5.12 | 0.0 | 10 | 23 | <1 | 14 h 10 min |
| August | 91°F | 67°F | 79.1°F | 4.31 | 0.0 | 9 | 21 | <1 | 13 h 30 min |
| September | 87°F | 60°F | 73.3°F | 3.94 | 0.0 | 6 | 12 | <1 | 12 h 30 min |
| October | 76°F | 47°F | 61.6°F | 3.84 | 0.0 | 7 | 1 | 4 | 11 h 20 min |
| November | 64°F | 36°F | 50.1°F | 4.58 | 0.0 | 9 | <1 | 15 | 10 h 30 min |
| December | 55°F | 31°F | 43.3°F | 6.42 | 0.2 | 10 | <1 | 20 | 9 h 50 min |
| Year (annual) | 74°F | 48°F | 60.7°F | 61.71 | 1.3 | 109 | 78 | 96 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 11°C | −2°C | 4.7°C | 139 mm | 1 cm |
| February | 14°C | 0°C | 6.8°C | 153 mm | 1 cm |
| March | 19°C | 3°C | 11.2°C | 134 mm | 1 cm |
| April | 24°C | 7°C | 15.6°C | 155 mm | 0 cm |
| May | 28°C | 13°C | 20.3°C | 147 mm | 0 cm |
| June | 31°C | 18°C | 24.6°C | 123 mm | 0 cm |
| July | 33°C | 20°C | 26.6°C | 130 mm | 0 cm |
| August | 33°C | 19°C | 26.2°C | 109 mm | 0 cm |
| September | 30°C | 16°C | 22.9°C | 100 mm | 0 cm |
| October | 24°C | 8°C | 16.4°C | 98 mm | 0 cm |
| November | 18°C | 2°C | 10.1°C | 116 mm | 0 cm |
| December | 13°C | 0°C | 6.3°C | 163 mm | 1 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00013645; 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 Hamilton?
Normal highs sit between 65°F and 85°F in March, April, May and October. Of those, October has the fewest days with rain (7).
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 USC00013645.
When is the last frost in Hamilton?
In Hamilton, the last spring frost (32°F) comes after April 11 in half of years and after April 27 in one year in ten; the first autumn frost comes before October 27 in half of years and before October 15 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
- April 111 year in 10 after April 27; 9 in 10 after March 26
- First autumn frost, half of years before
- October 271 year in 10 before October 15; 9 in 10 before November 10
NOAA puts the median frost-free season at 198 days, and the season without a hard freeze (28°F) at 222 days.
A hard freeze (28°F) comes after March 31 in half of springs and before November 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Hamilton in zone 7b in ZIP code 35570. By the map's own method, the average of each year's coldest night over 1991-2020, Hamilton's NOAA station is in zone 7b: the coldest night of a typical year reaches 7°F (28 complete years).
Frost dates for every NOAA station in Alabama · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00013645; 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 Hamilton?
In a normal year in Hamilton, 78 days a year reach 90°F (4 of them 100°F or more), 96 nights fall to 32°F or colder and 109 days bring measurable precipitation.
- Days at 90°F or more
- 78a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 96a normal year
- Days that stay below freezing
- 2high of 32°F or less
- Days with 0.01 inch of precipitation
- 109a normal year
- Days with 1 inch of snow or more
- 1a normal year
The highest temperature in this station's record (since 1962) is 109°F, on August 16, 2007; the lowest is −19°F, on January 30, 1966.
The wettest calendar year on that record is 1991, with 84.17 in; the snowiest season is 1963–64, with 14.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00013645; records: ACIS (NOAA Regional Climate Centers), station USC00013645. Records use complete months only; a month missing more than three days is left out.
How sunny is Hamilton?
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Hamilton, 4.4 kWh per square metre a day. August is the sunniest month (81%) and February the cloudiest (65%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 2.5 |
| February | 65% | 3.0 |
| March | 70% | 4.2 |
| April | 76% | 5.5 |
| May | 77% | 6.0 |
| June | 80% | 6.4 |
| July | 81% | 6.1 |
| August | 81% | 5.6 |
| September | 80% | 4.9 |
| October | 78% | 3.9 |
| November | 76% | 2.9 |
| December | 67% | 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 Hamilton need?
A normal year in Hamilton brings 3,303 heating degree days, 39% fewer than the median U.S. place (5,373), and 1,781 cooling degree days, 96% more than 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 5,001 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 764 | 1 |
| February | 580 | 2 |
| March | 410 | 10 |
| April | 189 | 42 |
| May | 47 | 155 |
| June | 1 | 340 |
| July | 0 | 459 |
| August | 0 | 437 |
| September | 14 | 263 |
| October | 169 | 64 |
| November | 454 | 7 |
| December | 676 | 2 |
| Year (annual) | 3,303 | 1,781 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00013645. 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 Hamilton been warmer than normal lately?
Over 52 complete years from 1962 to 2024, the station's annual mean temperature rose at a fitted 3.9°F per century (+0.21°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Hamilton's climate compare?
Hamilton is warmer than 11 of the other 79 places with their own NOAA record in Alabama, and wetter than 65. Across the 7,247 U.S. stations with normals, its annual mean of 60.7°F is warmer than 76%.
In the Köppen classification computed from these normals, Hamilton 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 Hamilton share this climate record?
2 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.
- Tremont, MS473 people · 18 mi NW
- Detroit, AL226 people · 11 mi SW
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 Hamilton's climate
What is the coldest month in Hamilton?
January, with a normal high of 53°F and a normal low of 28°F. The warmest is July (92°F by day, 68°F at night).
Does it snow in Hamilton?
Yes: 1 inch in a normal year, falling on 1 days with 0.1 inch or more, the most in January (0.4 inches).
What is the rainiest month in Hamilton?
December, with 6.42 in of precipitation in a normal year; the driest is October with 3.84 in.
What plant hardiness zone is Hamilton in?
The USDA's 2023 map puts Hamilton in zone 7b in ZIP code 35570. By the same method at Hamilton's NOAA station, the coldest night of a typical year reaches 7°F (28 years, 1991-2020): zone 7b.
How late can frost come in Hamilton?
In half of years the last 32°F night comes after April 11; in one year in ten it comes after April 27. Waiting until April 27 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Alabama climateThe statewide normals and every place in the state
- Winfield, AL16 miles from this station, 60.9°F a year
- Haleyville, AL22 miles from this station, 61.6°F a year
- Vernon, AL26 miles from this station, 63.5°F a year
- Fayette, AL29 miles from this station, 63.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made