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Elgin Weather by Month

Best time to visit Elgin
August–September
Average daily high Wet days Best window
Warmest month
Jul
29°C average high
Wettest month
May
133.2mm
Coolest month
Jan
-0.9°C average high
Peak comfort score
83
out of 100

The year at a glance

-15°-5°15°25°35°0133mmJFMAMJJASOND
Daily low to high range Rainfall (right axis)

Month by month

MonthHighLowRainWet daysScore
January -0.9°-9.6°48.7mm 10.88
February 1.4°-8.5°49mm 8.214
March -3°60.3mm 9.934
April 14.8°2.7°98.3mm 12.658
May 21.3°9.1°133.2mm 13.872
June 26.8°14.9°115.1mm 11.477
July 29°17.4°105.8mm 9.573
August 28.1°16.5°112mm 10.375
September 24.7°11.8°87.5mm 8.683
October 17.3°5.3°86.1mm 11.269
November 8.9°-0.9°57.7mm 9.242
December 2.1°-6.4°56.6mm 10.511

Averages from ELGIN WATER, IL US, 2.9km away, over 1995–2024.

What each month is like

January

January in Elgin averages a daily high of -0.9°C with nights around -9.6°C. Expect roughly 10.8 wet days totalling 48.7mm. A hard month to visit for comfort alone.

February

February in Elgin averages a daily high of 1.4°C with nights around -8.5°C. Expect roughly 8.2 wet days totalling 49mm. A hard month to visit for comfort alone.

March

March in Elgin averages a daily high of 8°C with nights around -3°C. Expect roughly 9.9 wet days totalling 60.3mm. A hard month to visit for comfort alone.

April

April in Elgin averages a daily high of 14.8°C with nights around 2.7°C. Expect roughly 12.6 wet days totalling 98.3mm. Generally workable, with some weather to plan around.

May

May in Elgin averages a daily high of 21.3°C with nights around 9.1°C. Expect roughly 13.8 wet days totalling 133.2mm. Generally workable, with some weather to plan around.

June

June in Elgin averages a daily high of 26.8°C with nights around 14.9°C. Expect roughly 11.4 wet days totalling 115.1mm. Comfortable conditions for being outdoors all day.

July

July in Elgin averages a daily high of 29°C with nights around 17.4°C. Expect roughly 9.5 wet days totalling 105.8mm. Generally workable, with some weather to plan around.

August

August in Elgin averages a daily high of 28.1°C with nights around 16.5°C. Expect roughly 10.3 wet days totalling 112mm. Comfortable conditions for being outdoors all day.

September

September in Elgin averages a daily high of 24.7°C with nights around 11.8°C. Expect roughly 8.6 wet days totalling 87.5mm. Comfortable conditions for being outdoors all day.

October

October in Elgin averages a daily high of 17.3°C with nights around 5.3°C. Expect roughly 11.2 wet days totalling 86.1mm. Generally workable, with some weather to plan around.

November

November in Elgin averages a daily high of 8.9°C with nights around -0.9°C. Expect roughly 9.2 wet days totalling 57.7mm. Demanding conditions — pack for it and plan indoor options.

December

December in Elgin averages a daily high of 2.1°C with nights around -6.4°C. Expect roughly 10.5 wet days totalling 56.6mm. A hard month to visit for comfort alone.

How the score works

Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Elgin peaks at 83.

Common questions

When is the best time to visit Elgin?

Based on 30 years of records, August–September scores highest for comfort in Elgin, balancing daytime temperature against rainfall.

What is the hottest month in Elgin?

July is the warmest, averaging a daily high of 29°C.

What is the wettest month in Elgin?

May is the wettest, averaging 133.2mm of rain across roughly 13.8 wet days.

How cold does Elgin get?

January is the coolest month, with average daily highs around -0.9°C.

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