The climate in Fort Smith during June can be summarized as hot, humid and a little damp.
June is in the summer in Fort Smith and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 31°C (88°F), whilst at night 19°C (65°F) is normal.
| Daytime temperature | 31°C 87.7°F | 
|---|---|
| Nightly temperature | 18.5°C 65.2°F | 
| Average temperature | 24.7°C 76.5°F | 
| Daily sunshine | 10.8 hrs | 
| Avg rainfall | 98 mm 3.9 ins | 
| Rainy days | 8 days | 
| Sea temperature | 19.8°C 67.6°F | 
| Humidity | 71% | 
| Windspeed | 12.2kph 8 mph | 
On average June is the 6th wettest month of the year in Fort Smith with around 98mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.8 hours of sunshine per day.
				
						
						The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Fort Smith in June 2025.
| Hottest month: | July | 33.5°C 92.3°F | 
|---|---|---|
| Driest month: | January | 57mm 2.2ins | 
| Sunniest month: | July | 11.3hrs | 
| Coldest month: | January | 8.8°C 47.8°F | 
| Wettest month: | May | 147mm 5.8ins |