Medina, OH rainwater: 33,922 gallons off a roof
Medina, OH: gallons off the roof each year
33,922gallons a year
That is a 1,500 sq ft asphalt roof under Medina, OH's normal 42.7 inches of rain, about 795 gallons for every inch that falls.
In Medina, OH 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 Medina 0.8 Ene station (1.0 mi away). Medina, OH ranks 64th wettest of the 176 cities covered in Ohio.
Month by month in Medina
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.01 | 2,392 | |
| Feb | 2.60 | 2,066 | |
| Mar | 3.51 | 2,790 | |
| Apr | 3.75 | 2,981 | 75 |
| May | 3.95 | 3,139 | 50 |
| Jun | 4.57 | 3,632 | |
| Jul | 4.21 | 3,346 | 17 |
| Aug | 3.54 | 2,814 | 101 |
| Sep | 3.82 | 3,036 | 66 |
| Oct | 3.36 | 2,671 | 123 |
| Nov | 3.23 | 2,567 | |
| Dec | 3.13 | 2,488 |
Jun is the wettest month (4.57 in, 3,632 gal off the roof); Feb the driest (2.60 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 Medina
Best fit: one 55-gallon barrel, which delivers about 329 gallons to the garden in a normal year (76.0% of its need).
If you buy one, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Medina's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 329 | 32,303 |
| 110 gal | 329 | 32,303 |
| 165 gal | 329 | 32,303 |
| 275 gal | 329 | 32,303 |
| 550 gal | 329 | 32,303 |
| 1,000 gal | 329 | 32,303 |
| 1,500 gal | 329 | 32,303 |
| 2,500 gal | 329 | 32,303 |
| 5,000 gal | 329 | 32,303 |
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 Ohio?
Legal. Ohio regulates rainwater cisterns used as a drinking-water source as private water systems (OAC chapter 3701-28): local health department permit, continuous disinfection and filtration. No state rule restricting non-potable collection or storage size.
Checked against the current source on 2026-11-06. Source