United States vs United States · 1991–2020

Altmar or
Ottawa?

Altmar peaks in September (80), Ottawa in September (80). Below, every month side by side — the better comfort score of the pair is marked, which is a statement about climate only.

Altmar against Ottawa, month by month. Stations: OTTAWA 4SW (20.7 km) and OTTAWA 4SW (5.9 km)
MonthAltmar dayAltmar rainOttawa dayOttawa rainDaylightBetter score
January0°C47 mm0°C47 mm9 h 31 / 9 h 30level · 5
February2.5°C40 mm2.5°C40 mm10 h 33 / 10 h 33level · 5
March9.5°C57 mm9.5°C57 mm11 h 48 / 11 h 48level · 15
April16.9°C87 mm16.9°C87 mm13 h 15 / 13 h 16level · 43
May22.8°C114 mm22.8°C114 mm14 h 28 / 14 h 29level · 70
June27.4°C108 mm27.4°C108 mm15 h 07 / 15 h 09level · 72
July29.1°C91 mm29.1°C91 mm14 h 52 / 14 h 53level · 66
August28.3°C97 mm28.3°C97 mm13 h 49 / 13 h 50level · 70
September25.3°C85 mm25.3°C85 mm12 h 25 / 12 h 25level · 80
October18.5°C77 mm18.5°C77 mm11 h 02 / 11 h 01level · 56
November9.9°C63 mm9.9°C63 mm9 h 49 / 9 h 48level · 19
December2.9°C50 mm2.9°C50 mm9 h 13 / 9 h 12level · 5

Comfort scores compare climate and nothing else — not cost, crowds, flights or what there is to do when you arrive. Two places can also read stations of very different quality: check the distance in the caption above before treating a one-point gap as meaningful.