Florida City, FL rainwater: 50,581 gallons off a roof
Florida City, FL: gallons off the roof each year
50,581gallons a year
That is a 1,500 sq ft asphalt roof under Florida City, FL's normal 63.6 inches of rain, about 795 gallons for every inch that falls.
In Florida City, FL a single barrel does most of the work. Storms come often enough that a small tank refills before it runs dry, and a bigger one would mostly sit full.
Rainfall: NOAA 1991-2020 climate normals, the Homestead 3.0 Nw station (3.5 mi away). Florida City, FL ranks 45th wettest of the 173 cities covered in Florida.
Month by month in Florida City
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 1.96 | 1,558 | |
| Feb | 2.55 | 2,027 | |
| Mar | 2.14 | 1,701 | |
| Apr | 2.76 | 2,194 | 198 |
| May | 5.76 | 4,578 | |
| Jun | 8.91 | 7,082 | |
| Jul | 8.09 | 6,430 | |
| Aug | 9.63 | 7,654 | |
| Sep | 8.97 | 7,129 | |
| Oct | 7.00 | 5,564 | |
| Nov | 3.24 | 2,575 | |
| Dec | 2.63 | 2,090 |
Aug is the wettest month (9.63 in, 7,654 gal off the roof); Jan the driest (1.96 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
What size rain barrel for Florida City
Best fit: one 55-gallon barrel, which delivers about 172 gallons to the garden in a normal year (86.8% of its need).
Before you buy, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Florida City's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 172 | 49,060 |
| 110 gal | 172 | 49,060 |
| 165 gal | 172 | 49,060 |
| 275 gal | 172 | 49,060 |
| 550 gal | 172 | 49,060 |
| 1,000 gal | 172 | 49,060 |
| 1,500 gal | 172 | 49,060 |
| 2,500 gal | 172 | 49,060 |
| 5,000 gal | 172 | 49,060 |
Simulated storm by storm through a normal year using the station's count of days with 0.1 in or more of rain each month.
Is rainwater collection legal in Florida?
Legal. Florida approves onsite non-potable use of rainwater for landscape irrigation, vehicle washing, filling pools and fountains and, in some local jurisdictions, toilet/urinal flushing (Florida Plumbing Code). No state storage cap or registration for non-potable collection.
Checked against the current source on 2026-11-06. Source