Last updated: May 6, 2024
Under the Köppen–Geiger climate classification West Lafayette features a humid subtropical climate (Cfa).Temperatures typically range between -1 °C (31 °F) and 24 °C (76 °F) through the year, but rarely can drop to -21 °C (-5 °F) or can rise to as high as 35 °C (95 °F).The average annual precipitation amounts to about 1336 mm (52.6 inches) and receives 148 rainy days on the 1 mm (0.04 inches) threshold annually.West Lafayette enjoys an average of 2796 hours of sunshine throughout the year, and daylight varies from 9 hours 20 minutes to 14 hours 58 minutes per day.
The warmest months in West Lafayette are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (71 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 2 °C (31 - 37 °F) throughout the day. On average each year, West Lafayette experiences 97 days above 25 °C (77.0 °F) and 86 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 21°C (70°F) | 25°C (77°F) | 24°C (76°F) | 29°C (84°F) | 32°C (89°F) | 34°C (93°F) | 34°C (94°F) | 34°C (93°F) | 35°C (95°F) | 33°C (92°F) | 26°C (79°F) | 18°C (65°F) |
Mean maximum | 16°C (61°F) | 19°C (67°F) | 22°C (73°F) | 27°C (80°F) | 31°C (88°F) | 33°C (91°F) | 33°C (92°F) | 33°C (91°F) | 32°C (90°F) | 29°C (84°F) | 21°C (70°F) | 17°C (62°F) |
Average high | 3°C (39°F) | 6°C (43°F) | 11°C (52°F) | 16°C (62°F) | 22°C (72°F) | 27°C (80°F) | 29°C (85°F) | 28°C (83°F) | 26°C (79°F) | 19°C (67°F) | 10°C (50°F) | 6°C (44°F) |
Daily mean | -1°C (31°F) | 1°C (35°F) | 6°C (42°F) | 11°C (52°F) | 17°C (63°F) | 22°C (71°F) | 24°C (76°F) | 23°C (73°F) | 20°C (69°F) | 14°C (58°F) | 6°C (42°F) | 2°C (37°F) |
Average low | -4°C (25°F) | -3°C (27°F) | 1°C (34°F) | 6°C (43°F) | 12°C (54°F) | 17°C (62°F) | 19°C (67°F) | 18°C (65°F) | 15°C (60°F) | 10°C (50°F) | 1°C (35°F) | -1°C (30°F) |
Mean minimum | -16°C (3°F) | -15°C (6°F) | -8°C (17°F) | -2°C (28°F) | 3°C (37°F) | 10°C (51°F) | 14°C (57°F) | 13°C (55°F) | 8°C (47°F) | 2°C (35°F) | -6°C (22°F) | -11°C (13°F) |
Minimum | -20°C (-4°F) | -21°C (-5°F) | -14°C (8°F) | -4°C (25°F) | -1°C (30°F) | 6°C (43°F) | 13°C (56°F) | 10°C (51°F) | 4°C (40°F) | -2°C (30°F) | -9°C (16°F) | -15°C (5°F) |
Compare temperature, precipitation, sunshine, UV index in West Lafayette, Ohio, United States with other places around the world.
West Lafayette usually has the most precipitation in April, May and June, with an average of 14 rainy days and 134 mm (5.3 inches) of precipitation per month.The driest months in West Lafayette are January, August and November. On average, 95 mm (3.7 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 92 (3.6) | 113 (4.5) | 109 (4.3) | 129 (5.1) | 131 (5.1) | 141 (5.5) | 114 (4.5) | 93 (3.6) | 107 (4.2) | 107 (4.2) | 99 (3.9) | 101 (4.0) |
Average precipitation days (≥ 1 mm) | 11 | 12 | 13 | 13 | 16 | 15 | 12 | 13 | 9 | 12 | 10 | 12 |
The sunniest months in West Lafayette are June, July and August, when the sun shines an average of 10 hours 35 minutes a day.Least sunny months in West Lafayette: January, February and December receive an average of 4 hours 23 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 108 | 148 | 223 | 241 | 270 | 309 | 342 | 323 | 280 | 228 | 179 | 141 |
Mean daily daylight hours | 9h 39m | 10h 40m | 11h 58m | 13h 18m | 14h 25m | 14h 58m | 14h 40m | 13h 40m | 12h 24m | 11h 4m | 9h 55m | 9h 20m |
West Lafayette experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 10, which corresponds to the Very High category of sun exposure.January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly West Lafayette UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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UV Index (month maximum) | 3 | 5 | 6 | 9 | 10 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |