Template:St. John's, Newfoundland and Labrador weatherbox
| Climate data for St. John's (St. John's International Airport) WMO ID: 71801; coordinates 47°37′20″N 52°44′34″W / 47.62222°N 52.74278°W; elevation: 140.5 m (461 ft); 1981–2010 normals, extremes 1874–present[a] | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high humidex | 19.2 | 17.3 | 17.2 | 26.1 | 29.5 | 34.8 | 38.5 | 37.7 | 35.8 | 29.8 | 23.7 | 20.7 | 38.5 |
| Record high °C (°F) | 15.7 (60.3) |
16.0 (60.8) |
19.4 (66.9) |
24.1 (75.4) |
27.2 (81.0) |
30.6 (87.1) |
32.2 (90.0) |
33.9 (93.0) |
29.5 (85.1) |
24.6 (76.3) |
19.4 (66.9) |
17.9 (64.2) |
33.9 (93.0) |
| Mean daily maximum °C (°F) | −0.8 (30.6) |
−1.1 (30.0) |
1.0 (33.8) |
5.6 (42.1) |
11.1 (52.0) |
15.8 (60.4) |
20.7 (69.3) |
20.5 (68.9) |
16.5 (61.7) |
10.8 (51.4) |
6.4 (43.5) |
1.8 (35.2) |
9.0 (48.2) |
| Daily mean °C (°F) | −4.5 (23.9) |
−4.9 (23.2) |
−2.6 (27.3) |
1.9 (35.4) |
6.4 (43.5) |
10.9 (51.6) |
15.8 (60.4) |
16.1 (61.0) |
12.4 (54.3) |
7.4 (45.3) |
3.0 (37.4) |
−1.5 (29.3) |
5.0 (41.0) |
| Mean daily minimum °C (°F) | −8.2 (17.2) |
−8.6 (16.5) |
−6.1 (21.0) |
−1.9 (28.6) |
1.7 (35.1) |
5.9 (42.6) |
10.9 (51.6) |
11.6 (52.9) |
8.2 (46.8) |
3.9 (39.0) |
−0.3 (31.5) |
−4.7 (23.5) |
1.0 (33.8) |
| Record low °C (°F) | −28.3 (−18.9) |
−29.4 (−20.9) |
−25.6 (−14.1) |
−18.3 (−0.9) |
−6.7 (19.9) |
−3.3 (26.1) |
−1.1 (30.0) |
0.5 (32.9) |
−1.7 (28.9) |
−5.6 (21.9) |
−14.4 (6.1) |
−20.0 (−4.0) |
−29.4 (−20.9) |
| Record low wind chill | −36 | −40 | −40 | −21 | −14 | −8 | −3 | 0 | −4 | −12 | −25 | −34 | −40 |
| Average precipitation mm (inches) | 149.2 (5.87) |
129.5 (5.10) |
142.2 (5.60) |
122.9 (4.84) |
102.6 (4.04) |
97.6 (3.84) |
91.6 (3.61) |
100.0 (3.94) |
129.6 (5.10) |
156.2 (6.15) |
148.1 (5.83) |
164.8 (6.49) |
1,534.2 (60.40) |
| Average rainfall mm (inches) | 66.0 (2.60) |
61.6 (2.43) |
84.8 (3.34) |
96.1 (3.78) |
97.9 (3.85) |
97.5 (3.84) |
91.6 (3.61) |
100.0 (3.94) |
129.6 (5.10) |
153.7 (6.05) |
124.8 (4.91) |
102.9 (4.05) |
1,206.4 (47.50) |
| Average snowfall cm (inches) | 88.7 (34.9) |
71.0 (28.0) |
57.3 (22.6) |
25.3 (10.0) |
4.4 (1.7) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
2.4 (0.9) |
22.4 (8.8) |
63.4 (25.0) |
335.0 (131.9) |
| Average precipitation days (≥ 0.2 mm) | 21.8 | 18.5 | 19.6 | 17.3 | 16.6 | 14.7 | 13.6 | 13.7 | 15.5 | 18.6 | 19.7 | 22.0 | 211.7 |
| Average rainy days (≥ 0.2 mm) | 9.3 | 8.6 | 11.0 | 13.9 | 15.9 | 14.7 | 13.6 | 13.7 | 15.5 | 18.1 | 15.7 | 12.7 | 162.6 |
| Average snowy days (≥ 0.2 cm) | 18.3 | 14.6 | 13.3 | 7.0 | 2.1 | 0.07 | 0.0 | 0.0 | 0.0 | 1.4 | 7.6 | 14.6 | 78.9 |
| Average afternoon relative humidity (%) (at 1500 LST) | 80.4 | 77.9 | 76.2 | 75.6 | 71.5 | 71.1 | 69.7 | 71.2 | 73.5 | 76.7 | 79.8 | 82.3 | 75.5 |
| Mean monthly sunshine hours | 65.5 | 90.2 | 107.4 | 140.4 | 176.3 | 198.9 | 216.7 | 206.6 | 170.5 | 122.1 | 76.3 | 62.4 | 1,633.2 |
| Mean daily sunshine hours | 8.7 | 10.2 | 11.2 | 13.6 | 15.0 | 15.5 | 14.9 | 14.2 | 12.9 | 10.3 | 10.1 | 8.5 | 15.5 |
| Percent possible sunshine | 23.7 | 31.1 | 29.2 | 34.3 | 37.6 | 41.7 | 44.9 | 46.7 | 45.1 | 36.2 | 27.2 | 23.7 | 35.1 |
| Average ultraviolet index | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 7 | 5 | 3 | 1 | 1 | 4 |
| Source: Environment and Climate Change Canada[3][1][2][4][5][6] and Weather Atlas[7] | |||||||||||||
Notes[edit]
References
- ^ a b "St John's". Canadian Climate Data. Environment and Climate Change Canada. 31 October 2011. Archived from the original on 5 August 2016. Retrieved 8 April 2016.
- ^ a b "St John's A". Canadian Climate Normals 1981–2010. Environment and Climate Change Canada. June 2011. Archived from the original on 12 August 2014. Retrieved 16 March 2014.
- ^ "February 1875". Environment and Climate Change Canada. 25 February 2016. Archived from the original on 5 August 2016. Retrieved 25 February 2016.
- ^ "Climate and sunshine data for St John's A". Canadian Climate Normals 1981–2010. [Environment and Climate Change Canada. June 2011. Retrieved 16 September 2013. [permanent dead link]
- ^ "Daily Data Report for August 1876 – Climate – Environment and Climate Change Canada". climate.weather.gc.ca. Environment and Climate Change Canada. 31 October 2011. Archived from the original on 8 November 2021. Retrieved 19 June 2018.
- ^ "Daily Data Report for December 2017 – Climate – Environment and Climate Change Canada". 31 October 2011. Archived from the original on 13 January 2018. Retrieved 12 January 2018.
- ^ "Saint John, Canada – Detailed climate information and monthly weather forecast". Yu Media GroupWeather Atlas. Archived from the original on 6 July 2019. Retrieved 6 July 2019.