Western New York · Chautauqua Ridge / Southwest Snow Belt
Chautauqua County weather and solar
What the climate here actually does to a solar array — production by season, the structural spec the snow load forces, and the roof decisions that follow from both.
The climate
Chautauqua Ridge / Southwest Snow Belt
Specific yield
1,020–1,160 kWh / kW-DC / yr
A 10 kW array averages about 10,900 kWh a year here.
Modeled NREL PVWatts v8 · verified Jan 2026
Mean annual snowfall
110–190 inches
Extreme lake-effect exposure from Lake Erie, amplified by 1,200-2,000 ft elevation.
Modeled NOAA/NWS seasonal snowfall records · verified Jan 2026Ridge locations above 1,500 feet regularly clear 150 inches. Lakeshore villages in the same county see closer to 80.
Design ground snow load
60–100 psf
Racking and structural review are engineered to this figure. Ask which number your proposal used.
Filed ASCE 7 ground snow load data · verified Jan 2026This is the single biggest cost driver on a Chautauqua-county roof mount. Site-specific case-study values apply in parts of this zone.
Winter quarter share
9% of annual
December, January, and February combined.
Derived NREL PVWatts v8 · verified Jan 2026
Days with snow on the array
35–70 per season
Far fewer than days with snow on the ground — panels shed.
Observed GridReady quote and bill review sample · verified Jan 2026
Seasonality
Production month by month on a 10 kW array
kWh per month from a 10 kW-DC array at the midpoint of the Chautauqua Ridge / Southwest Snow Belt yield band. Bar height is relative to the peak month.
Show the arithmetic
10 kW × 1,090 kWh/kW/yr (midpoint of the Chautauqua Ridge / Southwest Snow Belt band) = 10,900 kWh a year, distributed on a northern-temperate seasonal curve anchored so December through February sums to 9% of the total.
A modeled shape, not a measurement of your roof. Orientation, pitch, and shading move individual months more than they move the annual total.
Derived NREL PVWatts v8 · verified Jan 2026
Local weather
What the weather here specifically does
- Elevation does most of the work here. The difference between a lakeshore address in Dunkirk and a ridge address in Cherry Creek is roughly 60 inches of annual snowfall over about fifteen miles.
- This zone stays snowy after Lake Erie freezes, because upslope flow keeps producing even when the lake machine shuts down. Late-winter production recovers later here than on the plain.
- Ground snow load in parts of this zone is high enough that some roofs cannot take a conventional array without structural reinforcement. That is a real finding, not a sales objection.
- Long rural feeders plus heavy snow load on lines means outages here are more frequent and longer than anywhere on the Erie plain.
The roof
Consequences for the array itself
- Ask for the stamped structural calculation, not just a racking brochure. At 70+ psf the engineering is not boilerplate.
- Ground mounts need extra clearance here — an array whose bottom edge sits two feet off the ground will spend weeks buried.
- Steeper pitches shed dramatically better. A 10:12 roof in this zone loses far fewer days than a 4:12.
- If the house has an older roof structure, budget for the possibility that reinforcement is a real line item.
The one question worth asking every installer here
“What ground snow load is this racking engineered for, and can I see the stamped calculation?” The right answer in Chautauqua County is 60–100 psf. At this load, structural review is genuine engineering and some roofs will need reinforcement. That is a finding, not a sales objection.
Microclimates
Chautauqua County is not one climate
| Zone | Snowfall | Snow load | Specific yield |
|---|---|---|---|
| Chautauqua Ridge / Southwest Snow Belt (primary) | 110–190" | 60–100 psf | 1,020–1,160 kWh/kW |
| Lake Erie Plain | 75–110" | 40–50 psf | 1,080–1,220 kWh/kW |
| Southern Tier Hills | 70–120" | 50–70 psf | 1,050–1,170 kWh/kW |
By location
Elevation across Chautauqua County
| Place | Elevation | Climate zone | Guide |
|---|---|---|---|
| Mayville | 1,360 ft | Chautauqua Ridge / Southwest Snow Belt | Costs & production |
| Lakewood | 1,330 ft | Chautauqua Ridge / Southwest Snow Belt | Costs & production |
| Bemus Point | 1,320 ft | Chautauqua Ridge / Southwest Snow Belt | Costs & production |
| Jamestown | 1,300 ft | Chautauqua Ridge / Southwest Snow Belt | Costs & production |
| Falconer | 1,275 ft | Chautauqua Ridge / Southwest Snow Belt | Costs & production |
| Fredonia | 750 ft | Lake Erie Plain | Costs & production |
| Westfield | 750 ft | Lake Erie Plain | Costs & production |
| Dunkirk | 600 ft | Lake Erie Plain | Costs & production |
| Silver Creek | 600 ft | Lake Erie Plain | Costs & production |
Questions
Chautauqua County climate FAQ
- How much does snow reduce solar production in Chautauqua County?
- Less than most people expect. A pitched array here sees roughly 35 to 70 days a season with enough cover to stop production — the glass is slick and the array runs warmer than the shingles around it. Cloud cover through November and December costs more production than snow cover does. What snow really drives is the structural spec: design ground snow load here is 60 to 100 psf, and racking must be engineered and stamped for it.
- What is the seasonal production curve in Chautauqua County?
- Jul is the strongest month and Dec the weakest, by roughly 4.9 to one. December through February combined account for about 9% of annual output — roughly one month's worth of production spread across three months. A proposal that shows a smooth, near-flat monthly production curve for this county is not modeling this climate.
- Is Chautauqua County too far north or too cloudy for solar?
- No, but the honest framing is that the climate sets the ceiling and the electricity rate sets the value. A 10 kW array here produces roughly 10,900 kWh a year. That is real output — the question is what a kWh is worth where you live, which is a rate question rather than a weather one.
- How does lake-effect snow affect solar in Chautauqua County?
- Extreme exposure from Lake Erie, amplified by 1,200-2,000 ft elevation. Elevation does most of the work here. The difference between a lakeshore address in Dunkirk and a ridge address in Cherry Creek is roughly 60 inches of annual snowfall over about fifteen miles.
- Does cold weather help or hurt solar panels in Chautauqua County?
- Cold helps efficiency — panels produce more per unit of sunlight at low temperature, which is why a clear February day can outperform a hazy July one on a per-hour basis. What hurts is daylight hours and cloud cover, and this climate is short on both between November and February. The two effects do not cancel out; the daylight loss dominates.
Next step
Turn this into your own numbers
The climate sets what a roof can produce. Your rate sets what that production is worth, and your roof sets how much of the band you actually get.
How this page is built
This is a generated page: the structure is shared across locations, the numbers are not. Every figure comes from the source cited beside it, with the date we last checked it. Nothing here is a quote, an appraisal, or tax advice, and none of it is specific to your roof.
Rates and incentive programs change. We re-verify utility tariffs and NYSERDA program status on a rolling schedule and stamp the date on each number rather than on the page, so you can see which specific figures are fresh. Full methodology · Program status tracker · About the Local Energy Playbook
Page content last reviewed April 2026.