Compare London and Illinois Weather

London is 6573.4 kilometers (4084.5 miles) away and 6.0 hours ahead of Illinois, United States. London's climate is classified as Marine west coast, warm summer (Köppen climate classification: Cfb) while Illinois has a Humid continental, no dry season, hot summer climate (Dfa).

London generally has warmer weather than Illinois. The average mean temperature in London is 12.17°C (53.91°F) while Illinois’s temperature is 12.07°C (53.73°F) and the difference is 0.1°C (32.18°F). London is warmest on average in July, when the day time temperature may reach 19.93°C (67.87°F), while Illinois is hottest in July when the average high temperature is 24.9°C (76.82°F). London is coldest in January when the average low temperature is 2.34°C (36.21°F), while January is the coldest month in Illinois, when night time temperature often falls below -7.09°C (19.24°F).

Finally, London has about 1.33 times more rainfall than Illinois, (London’s 50.85mm vs Illinois’s average of 38.16mm).

Comparison summary

WeatherLondonIllinoisDifference
Hottest monthJuly: 19.93°C (67.87°F)July: 24.9°C (76.82°F)4.97°C (40.95°F)
Coldest monthJanuary: 2.34°C (36.21°F)January: -7.09°C (19.24°F)9.43°C (48.97°F)
Wettest monthJune: 67.82mm (2.67in)May: 71.99mm (2.83in)4.17mm (0.16in)
Driest monthApril: 38.88mm (1.53in)December: 17.82mm (0.7in)21.06mm (0.83in)

Temperature

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Precipitation

Precipitation (mm)


Precipitation (in)

Number of days with rainfall

Average Number of Rainy Days ( Days )

Wind Speed

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Average Wind Speed ( mph )

Average Length of Day ( Hours )

Average Length of Day ( Hours )

Humidity (%)

Humidity (%)

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