Historical weather data, all-time temperature records, and monthly climate averages for Iona, FL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Iona runs warm and mostly dry, with an average high of 84° and just a 17% chance of rain across 127 years of records. The date's range is striking though — from a sweltering 93° as recently as 2023 down to a sharp 47° back in 1915.
Iona plays in a narrow but punishing range for a Florida location — the all-time high of 103° hit in June 1981 shows it can bake, while a 24° reading on December 29, 1894 proves hard freezes are in the cards. The wettest single day on record, nearly 10 inches on October 21, 1924, is a reminder that fall storm systems mean business here.
Iona is warm year-round, with highs never dipping below the mid-70s even in January — making it a legitimate winter escape destination. Peak heat arrives in early July, when average highs reach 91°, and the wettest stretch runs late June into early July with nearly 2.5 inches of rain per week. If you're chasing dry and comfortable, spring and fall are your windows.