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The coolest places in North America in May: ranked by average high temperature

Nuuk tops the list at 2.6 °C in May. Ranked from 1991–2020 climate normals across 50 destinations in North America.

Top three in May: Nuuk (2.6 °C) , Saint-Pierre (5.1 °C) , Anchorage (11 °C) . Between first and 50th place the avg high differs by 18 °C.

# Destination Country Avg high Avg high Avg low Rainfall Wet days Sunshine Sea temp
1 Nuuk Greenland 2.6 °C 2.6 °C -2.5 °C 60 mm 8 354 h 1.4 °C
2 Saint-Pierre Saint Pierre and Miquelon 5.1 °C 5.1 °C 3.3 °C 102 mm 11 287 h 3.6 °C
3 Anchorage United States 11 °C 11 °C 2.9 °C 41 mm 9 389 h 2.4 °C
4 Halifax Canada 12 °C 12 °C 6.1 °C 85 mm 11 275 h 5.0 °C
5 Victoria Canada 15 °C 15 °C 9.2 °C 43 mm 8 368 h 10 °C
6 Milwaukee United States 16 °C 16 °C 9.7 °C 93 mm 11 330 h –
7 Toronto Canada 16 °C 16 °C 8.2 °C 73 mm 10 341 h –
8 Oshawa Canada 16 °C 16 °C 8.7 °C 76 mm 11 340 h –
9 Vancouver Canada 16 °C 16 °C 8.6 °C 114 mm 12 354 h 12 °C
10 Calgary Canada 17 °C 17 °C 3.1 °C 72 mm 11 365 h –
11 Richmond Canada 17 °C 17 °C 8.9 °C 113 mm 12 354 h 12 °C
12 Greater Sudbury Canada 17 °C 17 °C 6.0 °C 73 mm 10 330 h –
13 Edmonton Canada 17 °C 17 °C 5.3 °C 53 mm 8 375 h –
14 Burnaby Canada 17 °C 17 °C 8.1 °C 117 mm 12 353 h 12 °C
15 Etobicoke Canada 17 °C 17 °C 8.4 °C 73 mm 10 342 h –
16 Québec Canada 17 °C 17 °C 6.9 °C 102 mm 12 316 h –
17 Hamilton Canada 18 °C 18 °C 9.7 °C 83 mm 11 339 h –
18 Surrey Canada 18 °C 18 °C 7.5 °C 85 mm 10 361 h 12 °C
19 Montréal Canada 18 °C 18 °C 7.3 °C 98 mm 12 321 h –
20 Regina Canada 18 °C 18 °C 5.1 °C 61 mm 9 358 h –
21 Winnipeg Canada 18 °C 18 °C 5.9 °C 80 mm 11 338 h –
22 Saskatoon Canada 18 °C 18 °C 5.1 °C 46 mm 8 366 h –
23 Rochester United States 18 °C 18 °C 9.3 °C 81 mm 11 338 h –
24 Markham Canada 18 °C 18 °C 8.4 °C 82 mm 11 339 h –
25 Seattle United States 18 °C 18 °C 8.4 °C 76 mm 12 331 h –
26 Tacoma United States 18 °C 18 °C 8.4 °C 62 mm 11 333 h –
27 Mississauga Canada 18 °C 18 °C 8.4 °C 81 mm 11 342 h –
28 Buffalo United States 18 °C 18 °C 10 °C 87 mm 12 337 h –
29 Kitchener Canada 19 °C 19 °C 7.9 °C 89 mm 11 334 h –
30 Laval Canada 19 °C 19 °C 8.3 °C 92 mm 11 321 h –
31 Longueuil Canada 19 °C 19 °C 8.5 °C 98 mm 12 321 h –
32 Ottawa Canada 19 °C 19 °C 8.1 °C 88 mm 11 314 h –
33 San Francisco United States 19 °C 19 °C 11 °C 18 mm 3 397 h 12 °C
34 Eugene United States 19 °C 19 °C 7.8 °C 83 mm 11 326 h –
35 Boston United States 19 °C 19 °C 9.7 °C 80 mm 11 308 h 10 °C
36 Salinas United States 19 °C 19 °C 10 °C 16 mm 3 395 h 12 °C
37 London Canada 19 °C 19 °C 9.3 °C 98 mm 12 338 h –
38 Worcester United States 19 °C 19 °C 9.5 °C 83 mm 11 306 h –
39 Quetzaltenango Guatemala 20 °C 20 °C 13 °C 508 mm 30 309 h –
40 Providence United States 20 °C 20 °C 10 °C 79 mm 11 304 h –
41 Chicago United States 20 °C 20 °C 11 °C 116 mm 12 327 h –
42 Salem United States 20 °C 20 °C 8.3 °C 58 mm 9 335 h –
43 Vancouver United States 20 °C 20 °C 8.7 °C 89 mm 13 327 h –
44 Tijuana Mexico 20 °C 20 °C 14 °C 11 mm 2 390 h 17 °C
45 Portland United States 20 °C 20 °C 8.9 °C 72 mm 12 329 h –
46 Oceanside United States 20 °C 20 °C 14 °C 13 mm 2 398 h 18 °C
47 Oxnard United States 20 °C 20 °C 13 °C 9 mm 1 413 h 16 °C
48 Detroit United States 20 °C 20 °C 11 °C 90 mm 12 332 h –
49 Cleveland United States 20 °C 20 °C 12 °C 96 mm 13 337 h –
50 Grand Rapids United States 20 °C 20 °C 9.9 °C 109 mm 11 331 h –

Monthly values for the month named in the ranking; only destinations with a published climate page are ranked. Download this ranking as CSV.

The same ranking one month earlier and later

April: top 5

  1. Nuuk -2.4 °C
  2. Saint-Pierre 2.4 °C
  3. Anchorage 5.1 °C
  4. Halifax 7.4 °C
  5. Québec 8.4 °C

Full ranking for April

June: top 5

  1. Nuuk 8.8 °C
  2. Saint-Pierre 9.0 °C
  3. Anchorage 16 °C
  4. Halifax 17 °C
  5. Victoria 18 °C

Full ranking for June

How this ranking is built

What is ranked
The average daily high temperature, in °C, in May, lowest first.
Period
1991–2020 climate normals: the same 30 years for every destination, so the list compares like with like.
Who is included
50 destinations in North America with a published climate page. Neighbouring places that share a climate series are shown once.
Ties
Equal values are ordered by population.
Sources
ERA5 / ERA5-Land reanalysis via Open-Meteo; sea temperature from NOAA OISST v2.1. Measured values are reproduced unchanged; only the ordering is ours.

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: ranking order, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.