Compare the Climate and Weather in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County Airport

This page lets you compare and contrast the weather and climate in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County Airport year round.

You can drill down to a specific season, month, and even day by clicking the graphs or using the navigation panel.

Map
(will replace Oswego County Airport)

Average High and Low Temperature

Compare the Average High and Low Temperature in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F6318803175157242NowNowOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Rochester 32°F34°F43°F56°F67°F75°F80°F78°F71°F59°F48°F38°F
Greater Rochester International Airport 32°F34°F43°F57°F68°F77°F81°F78°F71°F60°F48°F38°F
Penn Yan Airport 33°F35°F44°F57°F69°F77°F81°F79°F72°F60°F48°F38°F
Point Petre , Ont. 30°F31°F37°F48°F57°F66°F74°F74°F67°F56°F46°F36°F
Cobourg, Ont. 30°F31°F38°F49°F59°F67°F73°F73°F66°F55°F44°F35°F
Oswego County Airport 31°F33°F42°F56°F67°F76°F80°F78°F70°F58°F47°F36°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Rochester 20°F21°F28°F39°F49°F58°F63°F62°F55°F44°F35°F26°F
Greater Rochester International Airport 20°F20°F28°F39°F49°F58°F63°F61°F54°F44°F35°F26°F
Penn Yan Airport 19°F20°F27°F38°F48°F58°F63°F61°F54°F44°F34°F25°F
Point Petre , Ont. 17°F18°F26°F36°F46°F55°F62°F63°F56°F45°F35°F25°F
Cobourg, Ont. 16°F18°F26°F37°F46°F55°F61°F61°F54°F43°F33°F23°F
Oswego County Airport 17°F19°F27°F38°F48°F57°F62°F60°F52°F42°F33°F24°F

Rochester

Average Hourly Temperature in RochesterJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldcoldcoolwarmvery coldcomfortablecomfortable

Greater Rochester International Airport

Average Hourly Temperature in Greater Rochester International AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldcoldcoolwarmvery coldcomfortablecomfortable

Penn Yan Airport

Average Hourly Temperature in Penn Yan AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldcoldcoolwarmvery coldcomfortablecomfortable

Point Petre , Ont.

Average Hourly Temperature in Point Petre , Ont.JanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldcoldcoldcoolcoolcomfortablefreezing

Cobourg, Ont.

Average Hourly Temperature in Cobourg, Ont.JanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldcoldcoldcoolcomfortablevery coldfreezingcomfortable

Oswego County Airport

Average Hourly Temperature in Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldcoldcoolwarmvery coldfreezingcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies

Compare the Chance of Clearer Skies in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%6631653526NowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International Airport
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Rochester 32%35%42%47%49%55%62%65%62%55%45%36%
Greater Rochester International Airport 31%35%42%47%49%54%62%65%62%55%44%36%
Penn Yan Airport 29%32%40%45%48%54%61%64%62%54%43%34%
Point Petre , Ont. 35%38%43%47%50%55%63%66%62%55%46%38%
Cobourg, Ont. 38%40%44%47%50%55%63%65%62%55%46%41%
Oswego County Airport 27%31%39%45%48%54%62%64%62%54%43%32%

Daily Chance of Precipitation

Compare the Daily Chance of Precipitation in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%3616333122NowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportPoint Petre , Ont.Point Petre , Ont.
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Rochester 5.7d5.2d7.4d8.4d9.4d10.0d10.2d9.8d9.4d9.8d8.1d7.3d
Greater Rochester International Airport 5.7d5.2d7.3d8.4d9.5d10.2d10.4d9.8d9.5d9.8d8.2d7.4d
Penn Yan Airport 5.6d5.3d7.6d8.4d9.8d10.9d11.1d10.0d9.2d8.9d7.5d6.9d
Point Petre , Ont. 6.2d5.3d7.0d8.2d8.6d8.8d8.5d8.2d8.9d9.6d8.3d7.8d
Cobourg, Ont. 5.8d4.9d6.5d7.6d8.0d8.6d8.2d8.0d8.3d8.7d7.5d7.0d
Oswego County Airport 8.0d6.8d8.7d9.2d9.9d10.2d10.2d9.8d9.7d10.6d9.9d9.4d

Average Monthly Rainfall

Compare the Average Monthly Rainfall in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 in3.5 in3.5 in4.0 in4.0 in2.80.62.62.33.40.9NowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Rochester 0.8″0.7″1.2″2.1″2.4″2.6″2.5″2.5″2.8″2.6″2.0″1.3″
Greater Rochester International Airport 0.8″0.7″1.2″2.1″2.4″2.7″2.6″2.5″2.8″2.6″2.0″1.3″
Penn Yan Airport 0.8″0.8″1.4″2.4″2.6″3.0″2.8″2.8″3.0″2.8″2.2″1.4″
Point Petre , Ont. 0.7″0.7″1.0″1.8″2.0″2.1″2.0″2.0″2.5″2.5″2.0″1.3″
Cobourg, Ont. 0.7″0.6″1.0″1.7″2.0″2.0″1.9″1.9″2.3″2.1″1.7″1.1″
Oswego County Airport 1.0″0.9″1.6″2.5″2.7″2.8″2.7″2.7″3.2″3.3″2.5″1.6″

Average Monthly Snowfall

Compare the Average Monthly Snowfall in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in5.96.74.58.0NowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Greater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.
SnowfallJanFebMarAprMayJunJulAugSepOctNovDec
Rochester 4.9″5.6″4.4″0.7″0.0″0.0″0.0″0.0″0.0″0.1″1.3″4.2″
Greater Rochester International Airport 5.0″5.8″4.5″0.7″0.0″0.0″0.0″0.0″0.0″0.1″1.5″4.5″
Penn Yan Airport 5.2″6.2″5.2″0.8″0.0″0.0″0.0″0.0″0.0″0.1″1.5″4.5″
Point Petre , Ont. 4.6″5.4″3.9″0.8″0.0″0.0″0.0″0.0″0.0″0.1″1.2″4.0″
Cobourg, Ont. 4.2″4.4″3.2″0.7″0.0″0.0″0.0″0.0″0.0″0.1″1.4″3.9″
Oswego County Airport 7.8″7.8″4.8″1.0″0.0″0.0″0.0″0.0″0.0″0.1″2.5″7.4″

Hours of Daylight

Compare the Hours of Daylight in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr15.49.0NowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Rochester 9.4h10.5h12.0h13.5h14.7h15.3h15.0h13.9h12.5h11.0h9.7h9.0h
Greater Rochester International Airport 9.4h10.5h12.0h13.5h14.7h15.3h15.0h13.9h12.5h11.0h9.7h9.1h
Penn Yan Airport 9.5h10.6h12.0h13.4h14.7h15.3h14.9h13.8h12.4h11.0h9.7h9.1h
Point Petre , Ont. 9.3h10.5h12.0h13.5h14.8h15.4h15.1h13.9h12.5h11.0h9.6h9.0h
Cobourg, Ont. 9.3h10.5h12.0h13.5h14.8h15.4h15.1h13.9h12.5h11.0h9.6h9.0h
Oswego County Airport 9.4h10.5h12.0h13.5h14.7h15.4h15.0h13.9h12.5h11.0h9.7h9.0h

Chance of Muggy Conditions

Compare the Chance of Muggy Conditions in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%3245NowNowRochesterRochesterCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Rochester 0.0d0.0d0.0d0.0d0.7d4.1d8.9d7.8d2.9d0.2d0.0d0.0d
Greater Rochester International Airport 0.0d0.0d0.0d0.0d0.8d4.4d8.6d7.4d2.7d0.2d0.0d0.0d
Penn Yan Airport 0.0d0.0d0.0d0.0d0.6d4.1d8.6d7.3d2.7d0.2d0.0d0.0d
Point Petre , Ont. 0.0d0.0d0.0d0.0d0.1d2.1d10.4d11.9d4.4d0.2d0.0d0.0d
Cobourg, Ont. 0.0d0.0d0.0d0.0d0.1d1.7d7.5d8.8d3.2d0.2d0.0d0.0d
Oswego County Airport 0.0d0.0d0.0d0.0d0.8d4.1d8.8d7.4d2.6d0.2d0.0d0.0d

Average Wind Speed

Compare the Average Wind Speed in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph11.35.710.78.03.914.07.38.1NowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportPoint Petre , Ont.Point Petre , Ont.
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Rochester 11.210.79.47.96.45.95.85.96.77.99.110.3
Greater Rochester International Airport 10.610.29.07.56.15.65.55.56.27.38.59.6
Penn Yan Airport 7.87.97.26.15.04.44.14.04.55.15.96.8
Point Petre , Ont. 13.812.911.49.67.87.47.67.99.210.712.213.3
Cobourg, Ont. 13.913.312.010.48.78.28.38.49.510.912.213.3
Oswego County Airport 10.810.59.07.46.05.45.45.66.47.58.79.9

Average Water Temperature

Compare the Average Water Temperature in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F7236NowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Rochester 39°F37°F36°F38°F43°F57°F68°F71°F66°F57°F49°F43°F
Greater Rochester International Airport 39°F37°F36°F38°F44°F57°F68°F71°F66°F57°F48°F43°F
Penn Yan Airport 39°F37°F36°F38°F44°F57°F69°F72°F67°F58°F49°F43°F
Point Petre , Ont. 38°F35°F35°F38°F44°F57°F68°F71°F66°F57°F49°F42°F
Cobourg, Ont. 38°F36°F36°F38°F44°F56°F67°F70°F65°F56°F47°F41°F
Oswego County Airport 39°F37°F36°F38°F44°F57°F69°F72°F67°F58°F50°F43°F

Tourism Score

Compare the Tourism Score in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.9NowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score

Compare the Beach/Pool Score in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.15.34.3NowNowRochesterRochesterCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season

Compare the Growing Season in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days

Compare the Growing Degree Days in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FNowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy

Compare the Average Daily Incident Shortwave Solar Energy in Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County AirportJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh6.91.3NowNowRochesterRochesterOswego County AirportOswego County AirportCobourg, Ont.Cobourg, Ont.Penn Yan AirportPenn Yan AirportGreater Rochester International AirportGreater Rochester International AirportPoint Petre , Ont.Point Petre , Ont.
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Rochester 1.52.43.75.16.26.86.65.94.73.11.91.3
Greater Rochester International Airport 1.52.43.75.16.26.86.65.94.73.11.91.3
Penn Yan Airport 1.62.43.75.16.16.76.65.94.73.21.91.4
Point Petre , Ont. 1.52.43.85.16.26.86.75.94.63.01.81.3
Cobourg, Ont. 1.62.53.85.16.26.86.75.94.63.01.81.3
Oswego County Airport 1.42.33.75.06.16.76.65.94.63.01.81.2

This report illustrates the typical weather for Rochester; Greater Rochester International Airport; Penn Yan Airport; Point Petre , Ont.; Cobourg, Ont.; and Oswego County Airport year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.