Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Janesville Weather in September
September in Janesville typically sees daytime highs of 24°C (75°F) and nighttime lows of 11°C (52°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Janesville in September
On average, there are about 9 days with rain during this month, averaging 79 mm (3.1 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Janesville in September
The temperature in Janesville in September is excellent. Daytime highs reach 24°C (75°F), with nights dropping to 11°C (52°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 11°C (52°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Janesville in September
The city usually sees around 212 hours of sunlight, indicating many sunny days , a great month for sightseeing.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Janesville.
Janesville Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
24°C (75°F)
Chance of Rain
31%
Precipitation
79 mm (3.1 in)
Rainy days
9 days
Humidity
76% *
Sunshine
212 hours *
Percentage Sunshine
57% *
* Data from: Madison, the United States of America (51 KM, 31 Miles).
Janesville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Janesville - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Janesville in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Janesville in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling9/10 -
Walking9/10 -
Barbeque8/10 -
Camping8/10 -
Outdoor sports9/10
Janesville 3-Day Forecast
More climate data for Janesville
Temperature Rainfall Sunshine Humidity
See the full Janesville climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
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