Click on a day for an hourly weather forecast
The temperatures in Gary in October are quite cold with temperatures between 9°C and 16°C, warm clothes are a must.
You can expect rain for roughly half of the month of October in Gary. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Gary in October 2025.
If you’re planning to visit Gary in the near future, we highly recommend that you review the 14 day weather forecast for Gary before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -1° / -7° | 9 | 17 | 5 | 60 mm | Awful | Gary in January |
| February | 1° / -6° | 8 | 16 | 5 | 68 mm | Awful | Gary in February |
| March | 7° / 0° | 8 | 20 | 3 | 94 mm | Awful | Gary in March |
| April | 13° / 5° | 9 | 21 | 0 | 131 mm | Bad | Gary in April |
| May | 19° / 11° | 10 | 20 | 0 | 151 mm | Ok | Gary in May |
| June | 24° / 17° | 10 | 20 | 0 | 161 mm | Good | Gary in June |
| July | 27° / 19° | 9 | 22 | 0 | 109 mm | Good | Gary in July |
| August | 26° / 19° | 9 | 22 | 0 | 112 mm | Good | Gary in August |
| September | 23° / 16° | 7 | 23 | 0 | 86 mm | Good | Gary in September |
| October | 16° / 9° | 9 | 22 | 0 | 114 mm | Ok | Gary in October |
| November | 9° / 3° | 6 | 24 | 0 | 64 mm | Ok | Gary in November |
| December | 3° / -2° | 8 | 21 | 2 | 66 mm | Awful | Gary in December |