(Atlantic, IA) – Weather data for the month of June in Atlantic (compiled at KJAN – the official NWS record keeping site), shows the month was on-par temperature-wise, but below average for precipitation. The historical average High for June would be 83 and the Low 59. During the month of June 2026, the average High in Atlantic was 83 and the Low was 60. The hottest days (June 1st, 10th and 29th), the mercury hit 91 degrees. The coldest morning was on the 14th, at 45 degrees.
Rainfall for June is typically 4.98 inches, but this past month, we only collected 2.34 inches in Atlantic. The most rain (1.09″) fell on June 4th.
Looking ahead to the month of July: The average High is 86; The average Low is 63, and rainfall typically amounts to 4.62 inches. Check back during the first week of August to see how the actual data compared to the historical averages.
