Gravenhurst, Ontario Climate Data

Gravenhurst, Ontario climate data is summarized below. Average annual temperatures range from 32.8 °F (low) to 52.4 °F (high). Annual precipitation averages 13 Inches. Gravenhurst is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.

Avg Annual High52.4 °F
Avg Annual Low32.8 °F
Annual Precipitation13 in.
Hardiness ZoneZone 5a
Growing Season: Last frost around Apr. 21 - Apr. 30 — First frost around Oct. 11 - Oct. 20 — Approximately 125-150 Days frost days per year.

Monthly Average Climate Data for Gravenhurst, Ontario

Average monthly temperatures and precipitation Switch to Celsius / Metric
MonthAvg. LowAvg. HighAvg. Precip
January-25.4 °F-20.1 °F76.2 in.
February-26.2 °F-20.1 °F0 in.
March-22.3 °F-16.3 °F482.6 in.
April-18.1 °F-11.6 °F609.6 in.
May-14.6 °F-7.2 °F787.4 in.
June-11.6 °F-4.8 °F1143 in.
July-10.3 °F-3.5 °F1549.4 in.
August-10.8 °F-4 °F1651 in.
September-13.3 °F-6.5 °F1092.2 in.
October-15.9 °F-10.6 °F558.8 in.
November-19.2 °F-14.5 °F304.8 in.
December-22.7 °F-18.5 °F152.4 in.
Annual32.8 °F52.4 °F13.03 in.

Additional Climate Conditions

Feels Like High-7.58|-8.03|-0.25|9.64|18.8|23.63|26.18|25.29|20.36|12|4.09|-4.25 °F
Feels Like Low-18.91|-20.21|-12.21|-3.3|4.47|10.62|13.29|12.53|7.55|1.78|-5.53|-13.36 °F
Avg Humidity82.5|78.16|73.41|67|66.61|72|72.41|75.53|79.03|81.5|82.66|86.63%
Avg Wind Speed11|11.29|11.41|11.88|10.75|9.61|9.36|8.48|8.32|9.54|10.29|10.8 mph
Cloud Cover84.38|80.38|72|65|57.5|54.43|44.5|45|50.5|69.5|74.43|87.5%
Days of Precipitation4|4|5|7|8|8|9|8|7|6|4|3 days/yr
Annual Snowfall13|25|11|5|0|0|0|0|0|0|3|3 in.

Climate Zone Data for Gravenhurst, Ontario

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost125-150 Days
Plant Hardiness ZoneZone 5a : -20°F to -15°F
Current Drought ConditionsNormal
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