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Boynton Beach weather by month

What a typical year looks like in Boynton Beach, Florida: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Donald J. Trump International Airport, 18 km from Boynton Beach; records cover 1888–2026.

Today’s Boynton Beach forecast

The year at a glance

January: typical high 74.7°F, low 57.9°F, precipitation 3.47 in. February: typical high 76.7°F, low 60.1°F, precipitation 2.63 in. March: typical high 79.2°F, low 63°F, precipitation 3.31 in. April: typical high 82.2°F, low 67.5°F, precipitation 3.68 in. May: typical high 85.7°F, low 71.7°F, precipitation 4.91 in. June: typical high 88.3°F, low 75°F, precipitation 8.48 in. July: typical high 90°F, low 76.1°F, precipitation 5.63 in. August: typical high 89.9°F, low 76.5°F, precipitation 8.68 in. September: typical high 88°F, low 75.8°F, precipitation 7.96 in. October: typical high 84.7°F, low 72.6°F, precipitation 5.9 in. November: typical high 80°F, low 66.1°F, precipitation 3.62 in. December: typical high 76.5°F, low 61.5°F, precipitation 3.48 in.10°−12°20°−7°30°−1°40°4°50°10°60°16°70°21°80°27°90°32°100°38°110°43°75°24°58°14°Jan77°25°60°16°Feb79°26°63°17°Mar82°28°68°20°Apr86°30°72°22°May88°31°75°24°Jun90°32°76°24°Jul90°32°77°25°Aug88°31°76°24°Sep85°29°73°23°Oct80°27°66°19°Nov77°25°62°16°DecPrecipitation
Bars: typical low to high (official normals, 1991–2020) Record high Record low
Precipitation a year
61.7 in1568 mm
Snow a year
Rare
Last spring freeze
Rare
First fall freeze
Rare
Heating degree days
202
Cooling degree days
4,167

Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 42°6° (heating, 99%) and 95°35° (cooling, 1%).

Month by month

Boynton Beach in January

Highs average 75°24° and lows 58°14°, with 3.5 in88 mm of precipitation in a typical January.

Record high
90°32° (2026)
Record low
26°−3° (1905)
Heating degree days
76
Cooling degree days
116

Boynton Beach in February

Highs average 77°25° and lows 60°16°, with 2.6 in67 mm of precipitation in a typical February.

Record high
90°32° (1918)
Record low
27°−3° (1895)
Heating degree days
42
Cooling degree days
138

Boynton Beach in March

Highs average 79°26° and lows 63°17°, with 3.3 in84 mm of precipitation in a typical March.

Record high
95°35° (1928)
Record low
26°−3° (1920)
Heating degree days
21
Cooling degree days
210

Boynton Beach in April

Highs average 82°28° and lows 68°20°, with 3.7 in93 mm of precipitation in a typical April.

Record high
99°37° (1971)
Record low
38°3° (1920)
Heating degree days
3
Cooling degree days
298

Boynton Beach in May

Highs average 86°30° and lows 72°22°, with 4.9 in125 mm of precipitation in a typical May.

Record high
99°37° (1922)
Record low
45°7° (1921)
Heating degree days
0
Cooling degree days
425

Boynton Beach in June

Highs average 88°31° and lows 75°24°, with 8.5 in215 mm of precipitation in a typical June.

Record high
100°38° (1921)
Record low
60°16° (1920)
Heating degree days
0
Cooling degree days
500

Boynton Beach in July

Highs average 90°32° and lows 76°24°, with 5.6 in143 mm of precipitation in a typical July.

Record high
101°38° (1942)
Record low
64°18° (1940)
Heating degree days
0
Cooling degree days
560

Boynton Beach in August

Highs average 90°32° and lows 77°25°, with 8.7 in220 mm of precipitation in a typical August.

Record high
99°37° (1924)
Record low
65°18° (1920)
Heating degree days
0
Cooling degree days
564

Boynton Beach in September

Highs average 88°31° and lows 76°24°, with 8 in202 mm of precipitation in a typical September.

Record high
97°36° (1911)
Record low
61°16° (1897)
Heating degree days
0
Cooling degree days
507

Boynton Beach in OctoberThis month

Highs average 85°29° and lows 73°23°, with 5.9 in150 mm of precipitation in a typical October.

Record high
95°35° (1900)
Record low
46°8° (1968)
Heating degree days
1
Cooling degree days
424

Boynton Beach in November

Highs average 80°27° and lows 66°19°, with 3.6 in92 mm of precipitation in a typical November.

Record high
92°33° (1919)
Record low
36°2° (1903)
Heating degree days
10
Cooling degree days
252

Boynton Beach in December

Highs average 77°25° and lows 62°16°, with 3.5 in88 mm of precipitation in a typical December.

Record high
90°32° (1941)
Record low
24°−4° (1894)
Heating degree days
49
Cooling degree days
173