Best Time to Visit Janesville: Month-by-Month Guide

Best months for Janesville: September, July, August, June.

  • Best months for Janesville: September, July, August, June.
  • Peak season is July, August, June. Expect higher prices and more visitors (estimated from the climate, not from visitor counts).
  • Shoulder season: May, September. Good weather without the busiest period.
  • Wettest months: May, June, April.
  • The least pleasant month is January (score 4.0).

Year at a glance

-2° -10° J 1° -8° F 7° -2° M 15° 4° A 21° 10° M 26° 16° J 28° 18° J 27° 17° A 23° 13° S 16° 6° O 8° 0° N 1° -6° D Rainy days

Weather by month

MonthAvg highAvg lowRainfall Rainy daysHumiditySunshine Score
January -2°C-10°C44 mm 8– – 4.0
February 1°C-8°C43 mm 7– – 4.2
March 7°C-2°C61 mm 9– – 5.2
April 15°C4°C101 mm 12– – 6.2
May 21°C10°C101 mm 12– – 7.2
June 26°C16°C105 mm 12– – 7.4
July 28°C18°C85 mm 10– – 7.7
August 27°C17°C91 mm 10– – 7.7
September 23°C13°C83 mm 9– – 7.9
October 16°C6°C71 mm 9– – 6.9
November 8°C0°C56 mm 8– – 5.6
December 1°C-6°C51 mm 8– – 4.1

Frequently asked questions

When is the best time to visit Janesville?

The best months are September, July, August, June.

When is the rainy season in Janesville?

The wettest months are May, June, April.