Grass Lake, ON, near Gravenhurst

Weather Forecast

Sat, Sep 07. Next 3 days: A lot of rain. Temp high +18°C, low +9°C. Moderate wind on Sat and Sun, up to 20 km/h.

Sat
07 		Sun
08 		Mon
09 		Tue
10 		Wed
11
AM PM night AM PM night AM PM night AM PM night AM PM night
Cloud cover, %%
Max temp, °C 12 12 10 12 16 15 16 18 16 16 20 19 21 24 22
Min temp, °C 11 10 9 9 13 12 12 16 12 11 17 17 16 22 19
Rain, mm 1 1 1 1 - - 5 3 - - - - - - -
Snow, cm - - - - - - - - - - - - - - -
Wind avg, km/h 20 20 20 15 20 15 10 10 5 5 5 10 10 5 10
Humidity, %% 80 80 70 70 60 70 90 70 80 90 70 80 80 70 80
Freezing level, m 2100 1600 1300 1500 2200 2600 2700 3000 3400 3800 4000 3900 3700 3800 3800
Cloud
cover		 °C Rain
mm		 Snow
cm		 Wind
km/h		 Humid
%%		 Freeze
m
07 Sat
07
Sat 		AM 12 1 - 20 80 2100
PM 12 1 - 20 80 1600
night 9 1 - 20 70 1300
08 Sun
08
Sun 		AM 10 1 - 15 70 1500
PM 16 - - 20 60 2200
night 12 - - 15 70 2600
09 Mon
09
Mon 		AM 14 5 - 10 90 2700
PM 18 3 - 10 70 3000
night 12 - - 5 80 3400
10 Tue
10
Tue 		AM 14 - - 5 90 3800
PM 20 - - 5 70 4000
night 17 - - 10 80 3900
11 Wed
11
Wed 		AM 18 - - 10 80 3700
PM 24 - - 5 70 3800
night 19 - - 10 80 3800

  1. Each time period answers the question: "If I go at <XX>, what is the weather that I should expect?". So, approximately:
    • AM - from 4am till noon
    • PM - from noon till 8pm
    • night - from 8pm till 4am next day
  2. Wind arrow shows direction of air flow. So arrow pointing up means wind from south to north; arrow pointing right means wind from west to east.
Location Ontario,
12 km from Gravenhurst
Altitude 206 m