Boston vs Chicago weather, all year round

Both Boston and Chicago's most comfortable months are June, August and September. Both score 70 or more out of 100 in June, August and September.

Both cities have their most comfortable month in September. The least comfortable month is January in Boston and March in Chicago.

The lead in comfort score changes hands during the year: Chicago from mid July to mid October, then Boston from mid October to early July.

Boston and Chicago are about the same for comfort score (49/100 against 49/100).

Boston and Chicago are about the same for average temperature (10.9°C against 11.1°C).

Both cities have their hottest month in July. The coolest month is January for both.

The lead in average temperature changes hands during the year: Chicago from early March to late June, then Boston from early July to early August, then Chicago from early August to late November, then Boston from late November to late February.

Boston and Chicago are about the same for average daytime high (15.5°C against 15.2°C).

Boston's average nighttime low is 0.6°C lower than Chicago's (6.4°C against 7.0°C).

Boston gets 5% fewer days above 30°C (86°F) than Chicago (24 days against 25 days).

Boston gets 10% more days below freezing than Chicago (102 days against 92 days).

Boston and Chicago are about the same for average feels-like temperature (8.7°C against 8.7°C).

Both cities have their hottest feeling month in July. The coolest feeling month is January for both.

Boston and Chicago are about the same for humidity (71% against 73%).

Boston's most humid month is September, Chicago's is December. The driest month is February in Boston and October in Chicago.

Boston gets 9% fewer muggy days than Chicago (43 days against 47 days).

Boston gets 17% more rainfall than Chicago (1217 mm against 1036 mm).

Boston gets 6% more rainy days than Chicago (124 days against 117 days).

Boston's wettest month is March, Chicago's is July. The driest month is February for both.

Boston and Chicago are about the same for sunshine (3134 h against 3189 h).

Boston's sunniest month is July, Chicago's is August. The dullest month is January in Boston and December in Chicago.

The lead in sunshine changes hands during the year: Chicago from late February to early November, then Boston from mid November to mid February.

Boston gets 13% less wind than Chicago (20 km/h against 22 km/h).

Boston gets 60% fewer windy days than Chicago (23 days against 56 days).

Both cities have their windiest month in March. The calmest month is September for both.

Boston gets 11% more snowfall than Chicago (67 cm against 61 cm).

Both cities have their snowiest month in January. The least snowy month is May for both.

Boston and Chicago are about the same for daylight (12 h against 12 h).