Jupiter, FL rainwater: 57,377 gallons off a roof
How much rain a roof in Jupiter, FL collects
57,377gallons a year
That is a 1,500 sq ft asphalt roof under Jupiter, FL's normal 72.2 inches of rain, about 795 gallons for every inch that falls.
In Jupiter, 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 Juno Beach station (5.5 mi away). Jupiter, FL ranks 3rd wettest of the 173 cities covered in Florida.
Month by month in Jupiter
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.85 | 3,060 | |
| Feb | 3.85 | 3,060 | |
| Mar | 4.94 | 3,926 | |
| Apr | 4.15 | 3,298 | 25 |
| May | 6.13 | 4,872 | |
| Jun | 10.06 | 7,996 | |
| Jul | 6.39 | 5,079 | |
| Aug | 8.69 | 6,907 | |
| Sep | 8.10 | 6,438 | |
| Oct | 6.68 | 5,309 | |
| Nov | 4.75 | 3,775 | |
| Dec | 4.60 | 3,656 |
Jun is the wettest month (10.06 in, 7,996 gal off the roof); Jan the driest (3.85 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
Which tank size is worth it in Jupiter
Best fit: one 55-gallon barrel, which delivers about 20 gallons to the garden in a normal year (80.2% 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 Jupiter's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 20 | 55,902 |
| 110 gal | 20 | 55,902 |
| 165 gal | 20 | 55,902 |
| 275 gal | 20 | 55,902 |
| 550 gal | 20 | 55,902 |
| 1,000 gal | 20 | 55,902 |
| 1,500 gal | 20 | 55,902 |
| 2,500 gal | 20 | 55,902 |
| 5,000 gal | 20 | 55,902 |
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