Climate
| Climate data for Grand Bank | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 13 (55) |
14 (57) |
15 (59) |
18 (64) |
24.5 (76.1) |
27 (81) |
29.5 (85.1) |
30 (86) |
29 (84) |
21.5 (70.7) |
18 (64) |
13 (55) |
30 (86) |
| Average high °C (°F) | −0.5 (31.1) |
−0.6 (30.9) |
2 (36) |
6.5 (43.7) |
12.2 (54.0) |
16.4 (61.5) |
20.6 (69.1) |
21.1 (70.0) |
17.4 (63.3) |
11.7 (53.1) |
6.7 (44.1) |
2 (36) |
9.6 (49.3) |
| Daily mean °C (°F) | −4.1 (24.6) |
−4.4 (24.1) |
−1.7 (28.9) |
2.7 (36.9) |
7.4 (45.3) |
11.4 (52.5) |
15.8 (60.4) |
16.6 (61.9) |
13.1 (55.6) |
7.9 (46.2) |
3.5 (38.3) |
−1.1 (30.0) |
5.6 (42.1) |
| Average low °C (°F) | −7.7 (18.1) |
−8.2 (17.2) |
−5.4 (22.3) |
−1.1 (30.0) |
2.5 (36.5) |
6.4 (43.5) |
11 (52) |
12 (54) |
8.9 (48.0) |
4.1 (39.4) |
0.3 (32.5) |
−4.1 (24.6) |
1.6 (34.9) |
| Record low °C (°F) | −21 (−6) |
−26 (−15) |
−22.5 (−8.5) |
−14 (7) |
−7 (19) |
−1 (30) |
1 (34) |
4 (39) |
0 (32) |
−6 (21) |
−13 (9) |
−20 (−4) |
−26 (−15) |
| Precipitation mm (inches) | 127.4 (5.016) |
122.7 (4.831) |
117.1 (4.61) |
124.8 (4.913) |
112.5 (4.429) |
112.1 (4.413) |
92.3 (3.634) |
87.3 (3.437) |
143.5 (5.65) |
153 (6.02) |
140.1 (5.516) |
128.2 (5.047) |
1,461.1 (57.524) |
| Rainfall mm (inches) | 75.4 (2.969) |
77.3 (3.043) |
92.3 (3.634) |
113.6 (4.472) |
111.9 (4.406) |
112.1 (4.413) |
92.3 (3.634) |
87.3 (3.437) |
143.5 (5.65) |
152.4 (6) |
131.9 (5.193) |
90.8 (3.575) |
1,280.9 (50.429) |
| Snowfall mm (inches) | 52 (2.05) |
45.4 (1.787) |
24.9 (0.98) |
11.1 (0.437) |
0.5 (0.02) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0.6 (0.024) |
8.2 (0.323) |
37.5 (1.476) |
180.2 (7.094) |
| Source: Environment Canada | |||||||||||||
- The climate of Grand Bank is classified as Boreal (Koppen Dfb).
- It enjoys one of the most favourable climates of Newfoundland and Labrador, mainly due to its position on the extreme southern coast of the Burin Peninsula.
- The winters are relatively mild winters with considerable variation in snow cover and heavy rainfall from October through December.
- The average air temperature in January is -0.5 °C - one of the warmest for all of Newfoundland and Labrador.
- Surface wind speeds average 20–30 km/hour, with 50–80 km/h typically sustained during low pressure systems. Very strong gusts (120–140 km/h) are a common feature along the south coast.
- During strong Arctic air outbreaks the "windchill equivalent temperature" is typically in the -25 to -35 °C range on the island.
- July has a mean temperature of 20.6 °C. Summers are generally cooled by low clouds and fog.
- There is less fog in Grand Bank than at the other location on the south coast where records are kept. Fog can often be seen around Grand Bank when the community itself is free of it. This is thought to be caused by a combination of the inland hills and ridges that cause the fog to evaporate before it reaches the town.
- Mean annual precipitation is 1461.1mm, which is high due to the occurrence of cyclonic storms and in which most of the precipitation falls as rain (1280.9mm or 81%).
- Snowfall in Grand Bank is about 180.2mm annually.
Read more about this topic: Grand Bank
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