South Bend, IN weather in August
In August, South Bend sees highs around 81°F and lows around 61°F: warm and often humid, with frequent rain. Expect about 10 wet days. It is one of the warmest months in South Bend. Good for outdoor plans.
- Normal high
- 81°F
- Normal low
- 61°F
- Wet days
- 10
- 4.0 in total
- Muggy days
- 11
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 82°F | 79°F |
| Normal low | 62°F | 58°F |
| Chance of a wet day | 32% | 32% |
| Sunrise / sunset | 6:39 am / 9:03 pm | 7:10 am / 8:20 pm |
| Daylight | 14.4 h | 13.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical August day
- 6 am63°Fdew point 60°F
- 9 am71°Fdew point 62°F
- Noon77°Fdew point 62°F
- 3 pm79°Fdew point 62°F
- 6 pm78°Fdew point 62°F
- 9 pm70°Fdew point 63°F
NOAA hourly normals (local standard time) from South Bend Michiana Rgnl Airport (4 mi away); average wind 7 mph; clear or few clouds in 53% of daytime hours, mostly cloudy or overcast in 31%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F8 of 31
- Hot dayshigh 90°F or more3 of 31
- Muggy daysdaily mean dew point 65°F or more11 of 31
- Wet daysat least 0.01 in of rain or melted snow10 of 31
- Notable rainat least 0.10 in7 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 4.0 in; a dry August brings about 2.1 in and a wet one about 5.2 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20201995: average high 86°F
- Coolest August2004: average high 76°F
- Wettest August2016: 12.8 in
- Driest August2010: 0.9 in
- Highest reading99°F (August 2, 1991)
- Lowest reading43°F (August 31, 2009)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 83°F | 81°F | 74°F |
| Normal low | 62°F | 61°F | 53°F |
| Wet days | 10 | 10 | 10 |
| Comfortable days | 6 | 8 | 15 |
| Daylight | 14.8 h | 13.8 h | 12.5 h |
Highs change by -2°F from July and -7°F into September.
Nearby alternatives in August
- Warmer: Dayton, OH171 mi · high 86°F · 8 wet days
- Drier: Carmel, IN118 mi · high 82°F · 7 wet days
- Cooler: Sister Bay, WI246 mi · high 75°F · 9 wet days
How South Bend ranks in August
- Normal high296th warmest of 378 cities; 6th of 6 in Indiana
- Wet days257th driest of 378
- Comfortable days91st most of 341
What to pack for South Bend in August
- A rain jacket or umbrella – rain on about 10 days
Heating and cooling
August has 14 heating degree days and 189 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is South Bend in August?
The normal high is 81°F and the normal low is 61°F. From 1991 to 2020 the hottest August reading was 99°F (August 2, 1991).
Does it rain a lot in South Bend in August?
About 10 days in August have at least 0.01 in of precipitation, and the normal total is 4.0 in. The wettest August in 1991-2020 was in 2016 (12.8 in); the driest was in 2010 (0.9 in).
Is August a good time to visit South Bend?
August ranks 5th of 12 months on our comfort score for South Bend (60 out of 100). It has about 8 comfortable days and about 3 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: South Bend Michiana Rgnl Airport (USW00014848), 3.8 mi WNW of the city center, 773 ft (81 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: South Bend Regional Airport (725350-14848), 3.8 mi WNW of the city center, 772 ft (80 ft higher than the city). Hourly observations, 1991-2020.