Indianapolis vs St. Louis Climate
88%matchIndianapolis and St. Louis are a 88% climate match. Very close: temperatures within 4°F (2°C), with similar rain, humidity and sun.
Indianapolis gets 41 in (1049 mm) of rain a year and St. Louis 41 in (1031 mm). July is the warmest month in both, with highs of 87°F (30°C) in Indianapolis and 90°F (32°C) in St. Louis.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
IndianapolisSt. Louissolid = high, dashed = low
Rain (in per month)
IndianapolisSt. Louis
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Indianapolis | St. Louis | Indianapolis | St. Louis | Indianapolis | St. Louis | |
| Jan | 36°F(2°C) | 41°F(5°C) | 20°F(-6°C) | 23°F(-5°C) | 2.8 in(71 mm) | 2.3 in(58 mm) |
| Feb | 41°F(5°C) | 46°F(8°C) | 23°F(-5°C) | 27°F(-3°C) | 2.5 in(63 mm) | 2.3 in(58 mm) |
| Mar | 52°F(11°C) | 57°F(14°C) | 33°F(0°C) | 36°F(2°C) | 3.4 in(86 mm) | 3.4 in(86 mm) |
| Apr | 65°F(18°C) | 69°F(21°C) | 43°F(6°C) | 46°F(8°C) | 4.2 in(106 mm) | 3.9 in(99 mm) |
| May | 75°F(24°C) | 79°F(26°C) | 54°F(12°C) | 57°F(14°C) | 4.6 in(116 mm) | 4.7 in(120 mm) |
| Jun | 83°F(29°C) | 87°F(31°C) | 63°F(17°C) | 67°F(19°C) | 4.1 in(104 mm) | 4.0 in(101 mm) |
| Jul | 87°F(30°C) | 90°F(32°C) | 66°F(19°C) | 70°F(21°C) | 4.2 in(107 mm) | 4.1 in(103 mm) |
| Aug | 86°F(30°C) | 89°F(32°C) | 64°F(18°C) | 68°F(20°C) | 3.1 in(80 mm) | 3.3 in(83 mm) |
| Sep | 80°F(27°C) | 83°F(28°C) | 56°F(13°C) | 59°F(15°C) | 3.0 in(76 mm) | 3.7 in(93 mm) |
| Oct | 68°F(20°C) | 71°F(22°C) | 45°F(7°C) | 47°F(9°C) | 2.9 in(74 mm) | 2.9 in(74 mm) |
| Nov | 53°F(12°C) | 56°F(14°C) | 34°F(1°C) | 36°F(2°C) | 3.4 in(87 mm) | 3.4 in(86 mm) |
| Dec | 41°F(5°C) | 45°F(7°C) | 25°F(-4°C) | 28°F(-2°C) | 3.1 in(79 mm) | 2.8 in(70 mm) |
1991–2020 averages, by calendar month.