For those seeking warm weather, the ideal time to visit Oshkosh is in June, July and August. During these months, temperatures typically soar to an average of 21.81 °C, and you'll find that May, September and March are the sunniest months, with an average of 117.83 hours of sunshine.
Conversely, if you favor cooler weather, consider planning your trip to Oshkosh in January, February or December. During this period, you can expect an average temperature of -6.22 °C.
For travelers indifferent to temperature but keen to steer clear of rain, it’s wise to avoid visiting during January, February and March, when the average precipitation in Oshkosh reaches 5.25 mm. Instead, consider the drier months of January, February and March, which feature significantly lower rainfall, averaging only 0 mm.