Climate guideThirty-year normals for Georgetown, Ontario
Georgetown climate by month
Warm-summer humid continental · DfbBest May–Jun · Sep
Annual mean8°day and night
Seasonal swing27°warmest vs coolest
Precipitation841 mm158 wet days a year
43.65° N, 79.92° WElevation 253 mUTC−4 · Eastern Daylight Time
When to goGeorgetown · weather score
Best timeMay–Jun · Sep
October: high / low14° / 5°
iSummary
What the weather is like
Georgetown has a warm-summer humid continental climate (Köppen Dfb): warm summers, cold winters and precipitation in every season.
The warmest month is July, when afternoons average 28° and nights 16°. January is the coolest month, with highs of -1° and lows of -10°. The difference between the warmest and the coolest month is about 27°, a large swing typical of continental interiors.
About 841 mm of precipitation falls in an average year. December is the wettest month (62 mm, 16 wet days) and February the driest (59 mm, 10 wet days). Cloud cover ranges from 29% in July to 54% in December.
Compared with Ottawa, the capital, Georgetown is 1.1° warmer on a July afternoon and receives less precipitation over the year.
Year in figures
- Hottest afternoons
- 28° · July
- Coldest nights
- -10° · January
- Wettest month
- December
- Driest month
- February
- Clearest skies
- July · 29% cloud
- Longest day
- 15 h 25 min
- Shortest day
- 8 h 57 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | -1° | 0° | 6° | 13° | 21° | 26° | 28° | 26° | 22° | 14° | 7° | 1° |
| Average low | -10° | -9° | -4° | 2° | 9° | 14° | 16° | 14° | 10° | 5° | -1° | -6° |
| Precipitation | 59 mm | 59 mm | 58 mm | 70 mm | 77 mm | 74 mm | 80 mm | 82 mm | 74 mm | 68 mm | 78 mm | 62 mm |
| Wet days (≥1 mm) | 14.5 | 10.2 | 10.2 | 13 | 11.8 | 13.8 | 14.5 | 13.8 | 10.8 | 15.3 | 14.3 | 15.8 |
| Cloud cover | 53% | 46% | 43% | 42% | 39% | 33% | 29% | 30% | 35% | 40% | 49% | 54% |
| Daylight | 9h 18 | 10h 31 | 11h 53 | 13h 25 | 14h 43 | 15h 25 | 15h 07 | 14h 00 | 12h 32 | 11h 04 | 9h 41 | 8h 57 |
| Month score | 15 | 27 | 29 | 40 | 68 | 62 | 55 | 62 | 72 | 43 | 17 | 15 |
ivMonth by month
Georgetown in every month
January15
-1° / -10°
59 mm · 14.5 wet days
February27
0° / -9°
59 mm · 10.2 wet days
March29
6° / -4°
58 mm · 10.2 wet days
April40
13° / 2°
70 mm · 13 wet days
May68
21° / 9°
77 mm · 11.8 wet days
June62
26° / 14°
74 mm · 13.8 wet days
July55
28° / 16°
80 mm · 14.5 wet days
August62
26° / 14°
82 mm · 13.8 wet days
September72
22° / 10°
74 mm · 10.8 wet days
October43
14° / 5°
68 mm · 15.3 wet days
November17
7° / -1°
78 mm · 14.3 wet days
December15
1° / -6°
62 mm · 15.8 wet days