Naperville vs Marion, Indiana Climate
98%matchOn climate, Marion is a 98% match for Naperville. Very close: temperatures within 2°F (1°C), with similar rain, humidity and sun.
Naperville gets 39 in (994 mm) of rain a year and Marion 39 in (992 mm). July is the warmest month in both, with highs of 85°F (30°C) in Naperville and 85°F (29°C) in Marion.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
NapervilleMarionsolid = high, dashed = low
Rain (in per month)
NapervilleMarion
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Naperville | Marion | Naperville | Marion | Naperville | Marion | |
| Jan | 32°F(0°C) | 34°F(1°C) | 16°F(-9°C) | 19°F(-7°C) | 1.8 in(46 mm) | 2.4 in(62 mm) |
| Feb | 37°F(3°C) | 38°F(3°C) | 19°F(-7°C) | 21°F(-6°C) | 1.7 in(43 mm) | 2.2 in(56 mm) |
| Mar | 49°F(9°C) | 49°F(9°C) | 29°F(-1°C) | 30°F(-1°C) | 2.3 in(59 mm) | 3.0 in(76 mm) |
| Apr | 61°F(16°C) | 62°F(17°C) | 38°F(4°C) | 40°F(4°C) | 4.4 in(113 mm) | 3.8 in(96 mm) |
| May | 73°F(23°C) | 73°F(23°C) | 49°F(9°C) | 51°F(10°C) | 4.7 in(119 mm) | 4.4 in(113 mm) |
| Jun | 82°F(28°C) | 82°F(28°C) | 58°F(15°C) | 60°F(16°C) | 4.8 in(122 mm) | 4.4 in(111 mm) |
| Jul | 85°F(30°C) | 85°F(29°C) | 63°F(17°C) | 63°F(17°C) | 3.9 in(99 mm) | 4.0 in(102 mm) |
| Aug | 83°F(28°C) | 83°F(29°C) | 62°F(17°C) | 62°F(16°C) | 4.2 in(107 mm) | 3.6 in(91 mm) |
| Sep | 77°F(25°C) | 78°F(25°C) | 54°F(12°C) | 54°F(12°C) | 3.5 in(89 mm) | 2.5 in(64 mm) |
| Oct | 64°F(18°C) | 65°F(19°C) | 42°F(6°C) | 43°F(6°C) | 3.0 in(76 mm) | 2.8 in(71 mm) |
| Nov | 49°F(10°C) | 51°F(10°C) | 31°F(0°C) | 33°F(0°C) | 2.6 in(67 mm) | 3.1 in(80 mm) |
| Dec | 37°F(3°C) | 38°F(4°C) | 21°F(-6°C) | 24°F(-5°C) | 2.1 in(54 mm) | 2.8 in(70 mm) |
1991–2020 averages, by calendar month.