27 Would possibly 2024, Memorial Day
Pittsburghers used to have a convention that Memorial Day was once the beginning of out of doors tomato planting season. However in case you develop tomatoes nowadays you recognize that’s now not the case. You most likely planted them weeks in the past.
Simply 50 years in the past Pittsburgh had an annual moderate minimal temperature of -10 to 0 levels F and the ones numbers didn’t exchange ten years after this USDA map was once produced in 1960.
However the local weather is converting impulsively now. Ultimate yr USDA formally revised their Hardiness Zones as proven at the 2023 map under.
The Pittsburgh house shifted a 1/2 zone hotter in 11 years. Understand the paler colour within the river valleys in Allegheny County at the zoomed map under. Our moderate annual lowest temperature was once -5° to 0°F however it jogged 5 levels hotter. Now it’s 0° to five° F.
None of it is a wonder. We had been indubitably felt sizzling in April, the warmest on document.
