Westfield weather by month
What a typical year looks like in Westfield, Indiana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at WHITESTOWN, 18 km from Westfield; records cover 1901–2026.
The year at a glance
- Precipitation a year
- 41.3 in1048 mm
- Snow a year
- 22 in56 cm
- Last spring freeze
- Apr 22
- First fall freeze
- Oct 15
- Heating degree days
- 5,619
- Cooling degree days
- 894
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −2°−19° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Westfield in January
Highs average 33°1° and lows 20°−7°, with 2.9 in73 mm of precipitation and 7 in18 cm of snow in a typical January.
- Record high
- 70°21° (1950)
- Record low
- −27°−33° (1994)
- Heating degree days
- 1192
- Cooling degree days
- 0
Westfield in February
Highs average 39°4° and lows 23°−5°, with 2.5 in63 mm of precipitation and 7 in17 cm of snow in a typical February.
- Record high
- 74°23° (2000)
- Record low
- −22°−30° (1905)
- Heating degree days
- 958
- Cooling degree days
- 0
Westfield in March
Highs average 50°10° and lows 32°0°, with 3.2 in80 mm of precipitation and 2.4 in6.1 cm of snow in a typical March.
- Record high
- 84°29° (1910)
- Record low
- −12°−24° (1948)
- Heating degree days
- 750
- Cooling degree days
- 1
Westfield in April
Highs average 63°17° and lows 42°6°, with 4.3 in109 mm of precipitation and 0.2 in0.5 cm of snow in a typical April.
- Record high
- 91°33° (1925)
- Record low
- 15°−9° (1940)
- Heating degree days
- 385
- Cooling degree days
- 11
Westfield in May
Highs average 73°23° and lows 53°12°, with 4.6 in116 mm of precipitation in a typical May.
- Record high
- 99°37° (1934)
- Record low
- 24°−4° (1947)
- Heating degree days
- 145
- Cooling degree days
- 75
Westfield in June
Highs average 81°27° and lows 61°16°, with 4.7 in119 mm of precipitation in a typical June.
- Record high
- 104°40° (1934)
- Record low
- 35°2° (1910)
- Heating degree days
- 20
- Cooling degree days
- 200
Westfield in July
Highs average 83°28° and lows 64°18°, with 3.8 in97 mm of precipitation in a typical July.
- Record high
- 112°44° (1936)
- Record low
- 43°6° (1904)
- Heating degree days
- 4
- Cooling degree days
- 267
Westfield in August
Highs average 82°28° and lows 62°17°, with 2.9 in72 mm of precipitation in a typical August.
- Record high
- 106°41° (1936)
- Record low
- 37°3° (1986)
- Heating degree days
- 8
- Cooling degree days
- 221
Westfield in September
Highs average 77°25° and lows 55°13°, with 3.3 in84 mm of precipitation in a typical September.
- Record high
- 105°41° (1939)
- Record low
- 24°−4° (1942)
- Heating degree days
- 80
- Cooling degree days
- 104
Westfield in OctoberThis month
Highs average 65°18° and lows 44°7°, with 3 in75 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 90°32° (1939)
- Record low
- 13°−11° (1908)
- Heating degree days
- 342
- Cooling degree days
- 15
Westfield in November
Highs average 50°10° and lows 34°1°, with 3.4 in87 mm of precipitation and 0.6 in1.5 cm of snow in a typical November.
- Record high
- 80°27° (1933)
- Record low
- −6°−21° (1930)
- Heating degree days
- 693
- Cooling degree days
- 0
Westfield in December
Highs average 38°3° and lows 25°−4°, with 2.9 in73 mm of precipitation and 5 in12 cm of snow in a typical December.
- Record high
- 73°23° (1982)
- Record low
- −23°−31° (1924)
- Heating degree days
- 1042
- Cooling degree days
- 0