Lake Ontario National Marine Sanctuary Monthly Climate Normals and Annual Weather Patterns

Name: Lake Ontario National Marine Sanctuary monthly climate normals
Creator: NASA POWER

Analyze the twelve month climate profile for Lake Ontario National Marine Sanctuary based on 1991 to 2020 NASA POWER measurements. These records reflect a single representative coordinate at an elevation of 87.77 meters, detailing monthly trends in mean temperatures, daily precipitation rates, relative humidity, wind speed, and daylight hours to provide a factual foundation for regional climate comparison.

View park overview Browse climate zones

Annual climate pattern

Analysis of twelve month average minimum and maximum temperatures alongside daily precipitation rates

Lake Ontario National Marine Sanctuary Annual Climate Normals and Monthly Temperature Patterns

Average monthly temperatures across Lake Ontario National Marine Sanctuary range from sub-zero winter minimums to warm summer peaks, establishing a clear long-term annual thermal progression for the protected area. Corresponding average daily precipitation rates remain steady through the twelve month climatology period, providing baseline climate data for one representative geographic coordinate.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 8.7 °C
Warmest month: August
Coolest month: February
Wettest month: October

Twelve-month climate

Twelve month climatology comparing temperature, precipitation, wind, humidity, and daylight

Lake Ontario National Marine Sanctuary Monthly Climate and Weather Data by Month

Analyzing monthly temperature bounds alongside average daily precipitation rates reveals the long-term climate normals across the calendar year at a representative coordinate. Comparing relative humidity, wind speed, and calculated daylight hours across all twelve records provides a complete multi-variable baseline.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	-2.3 °C-12.6° to 7.8°	2.2 mm/day	86.1%	7.1 m/s	9.2 hours
February	-2.4 °C-12.4° to 6.7°	2 mm/day	84.5%	6.6 m/s	10.3 hours
March	0.4 °C-9.6° to 10.2°	2.1 mm/day	82.3%	5.6 m/s	11.7 hours
April	4.9 °C-1.9° to 15.4°	2.6 mm/day	81.8%	4.8 m/s	13.2 hours
May	10 °C3.4° to 19.9°	2.5 mm/day	82.9%	3.7 m/s	14.5 hours
June	16.2 °C8.8° to 24.3°	2.7 mm/day	82%	3.4 m/s	15.2 hours
July	20.7 °C15.4° to 26.7°	2.7 mm/day	78.3%	3.7 m/s	14.9 hours
August	21.1 °C15.6° to 27.1°	2.5 mm/day	75.9%	3.9 m/s	13.7 hours
September	17.7 °C10.4° to 25.5°	2.8 mm/day	75.4%	4.4 m/s	12.3 hours
October	11.5 °C4.5° to 20.5°	3.1 mm/day	77.3%	5.4 m/s	10.7 hours
November	6 °C-1.5° to 14.9°	2.6 mm/day	79.7%	6.1 m/s	9.4 hours
December	1.2 °C-7.9° to 9.7°	2.5 mm/day	83.4%	6.7 m/s	8.8 hours

Calculated climate highlights

Comparative monthly averages for temperature, precipitation, humidity, wind, and daylight duration

Lake Ontario National Marine Sanctuary Monthly Climate Highlights and Calculated Annual Normals

Calculated monthly normals outline the warmest, coolest, wettest, and windiest periods derived from long-term climatology data at a representative coordinate. These comparative averages summarize annual variations across multiple environmental variables without representing observed weather extremes or localized conditions.

Warmest month: August21.1 °C
Coolest month: February-2.4 °C
Wettest month: October3.1 mm/day
Driest month: February2 mm/day
Most humid month: January86.1%
Windiest month: January7.1 m/s
Longest daylight: June15.2 hours

Interactive climate map

Compare National Park Climate Data Through an Interactive Global Map

Visit the MoriAtlas climate map to compare long-term monthly temperature and precipitation metrics across national parks. This visual interface helps you understand seasonal variations at specific protected area coordinates to deepen your knowledge of global park geography and environmental characteristics.

Global National Park Climate Map

Other park climates

Explore monthly temperature, precipitation, and atmospheric normals across diverse regional park settings.

Beyond Lake Ontario National Marine Sanctuary: Compare Long Term Climate Profiles Across Protected Areas

Standardized monthly climate profiles allow for direct comparison of annual temperature ranges and precipitation rhythms across different protected landscapes. Examining long-term humidity, wind, and daylight records reveals broad geographic contrast without requiring shared environmental conditions.