Top plot: Daily high and low temperatures observed at Chicago-O'Hare Airport over the course of the 2025 calendar year plotted relative to the normal and record high and low temperatures for each date.
Middle plot: Liquid precipitation accumulation at Chicago-O'Hare Airport over the course of the 2025 calendar year plotted relative to the normal year-to-date liquid precipitation accumulation.
Bottom plot: Snowfall accumulation at Chicago-O'Hare Airport over the course of the 2025 calendar year plotted relative to the normal year-to-date snowfall accumulation.
Top plot: Daily high and low temperatures observed at Rockford Airport over the course of the 2025 calendar year plotted relative to the normal and record high and low temperatures for each date.
Middle plot: Liquid precipitation accumulation at Rockford Airport over the course of the 2025 calendar year plotted relative to the normal year-to-date liquid precipitation accumulation.
Bottom plot: Snowfall accumulation at Rockford Airport over the course of the 2025 calendar year plotted relative to the normal year-to-date snowfall accumulation.
2025 Calendar Year Climate Summary for Chicago and Rockford
Public Information Statement
National Weather Service Chicago IL
1138 AM CST Thu Jan 1 2026 /1238 PM EST Thu Jan 1 2026/
...A Look Back at the Climate for the 2025 Calendar Year for
Chicago and Rockford...
At Chicago, the average high temperature was 60.5 degrees, which
is 1.0 degree above normal. The average low temperature was 43.6
degrees, which is 0.6 degrees above normal. The mean average
temperature for the year was 52.1 degrees, which is 0.9 degrees
above normal. 29.79 inches of liquid precipitation were recorded,
which is 8.07 inches below normal. 32.2 inches of snow were
recorded, which is 6.2 inches below normal.
Below is a listing of daily temperature and precipitation
records, as well as top ten monthly, seasonal, and annual
temperature and precipitation records that were established for
Chicago in 2025...
JANUARY -- No daily or top ten monthly records set.
FEBRUARY -- No daily or top ten monthly records set.
MARCH --
** 10th warmest March on record with an average temperature of
44.4 degrees.
APRIL -- No daily or top ten monthly records set.
MAY --
* Record daily high temperature of 94 degrees on the 15th.
JUNE --
* Record daily liquid precipitation of 1.86 inches on the 18th.
* Record daily warmest low temperature of 78 degrees on the 21st.
* Record daily warmest low temperature of 80 degrees on the 22nd.
* Tied record daily warmest low temperature of 79 degrees on the
23rd.
* Tied record daily warmest low temperature of 77 degrees on the
26th.
** Tied 6th warmest June on record with an average temperature of
74.2 degrees.
JULY -- No daily or top ten monthly records set.
AUGUST -- No daily or top ten monthly records set.
SEPTEMBER --
** Tied 7th driest September on record with 0.49 inches of liquid
precipitation.
OCTOBER -- No daily or top ten monthly records set.
NOVEMBER --
* Record daily snowfall of 1.2 inches on the 10th.
* Tied record daily high temperature of 71 degrees on the 15th.
* Record daily snowfall of 8.4 inches on the 29th.
** 7th snowiest November on record with 10.4 inches of snow.
DECEMBER -- No daily or top ten monthly records set.
SEASONAL --
* 10th least snowiest meteorological winter on record with 11.9
inches of snow.
* 7th snowiest meteorological fall on record with 10.4 inches of
snow.
ANNUAL -- No top ten annual records set.
..................................................................
At Rockford, the average high temperature was 60.8 degrees, which
is 2.0 degrees above normal. The average low temperature was
39.5 degrees, which is 0.5 degrees below normal. The average
temperature for the year was 50.1 degrees, which is 0.7 degrees
above normal. 27.74 inches of liquid precipitation were recorded,
which is 9.50 inches below normal. 31.1 inches of snow were
recorded, which is 6.0 inches below normal.
Below is a listing of daily temperature and precipitation
records, as well as top ten monthly, seasonal, and annual
temperature and precipitation records that were established for
Rockford in 2025...
JANUARY --
* Record daily high temperature of 54 degrees on the 17th.
* Record daily high temperature of 55 degrees on the 30th.
FEBRUARY -- No daily or top ten monthly records set.
MARCH --
* Record daily high temperature of 80 degrees on the 14th.
* Record daily high temperature of 80 degrees on the 28th.
** Tied 8th warmest March on record with an average temperature
of 42.9 degrees.
APRIL -- No daily or top ten monthly records set.
MAY --
* Record daily high temperature of 94 degrees on the 15th.
JUNE --
* Record daily warmest low temperature of 74 degrees on the 21st.
* Record daily warmest low temperature of 77 degrees on the 22nd.
This also tied Rockford's record warmest low temperature for
the month of June.
JULY --
* Tied record daily warmest low temperature of 74 degrees on the
24th.
AUGUST -- No daily or top ten monthly records set.
SEPTEMBER -- No daily or top ten monthly records set.
OCTOBER -- No daily or top ten monthly records set.
NOVEMBER --
* Record daily high temperature of 70 degrees on the 15th.
* Record daily snowfall of 8.0 inches on the 29th.
** 4th snowiest November on record with 10.0 inches of snow.
DECEMBER --
* Tied record daily low temperature of -4 degrees on the 4th.
* Record daily snowfall of 4.9 inches on the 7th.
* Record daily coldest high temperature of 4 degrees on the 14th.
SEASONAL --
* Tied 10th driest meteorological winter on record with 2.38
inches of liquid precipitation.
* 4th snowiest meteorological fall on record with 10.0 inches
of snow.
ANNUAL -- No top ten annual records set.
..................................................................
Chicago's climatic period of record dates back to:
1871 for precipitation
1872 for temperatures
1884 for snowfall
Rockford's climatic period of record dates back to:
1905 for temperatures, precipitation, and snowfall
$$
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