Chicago Weather Records Tracking

[Chicago Storm]

19 hours ago, mimillman said:

Out of curiosity, what was the latest subfreezing low temperature for Chicago?

9/24/1931.

Currently we are ranked 27th latest.

[IWXwx]

1 hour ago, Chicago Storm said:

9/24/1931.

Currently we are ranked 27th latest.

?

[Lightning]

2 hours ago, IWXwx said:

?

I think he meant 11/24/31

[A-L-E-K]

december or bust

[A-L-E-K]

euro gets us well into mid month without a freeze in sight

[Chicago Storm]

22 hours ago, IWXwx said:

?

 

19 hours ago, Lightning said:

I think he meant 11/24/31

i have no clue why i had september in there. oops.

[Chicago Storm]

Chicago/O'Hare had a low temperature of 63° on November 4th, which broke the record high minimum temperature for the date of 61° (2022).

The low temperature of 63° on November 4th also tied the all-time November record high minimum temperature of 63°, set 11/9/2020, 11/7/1975, and 11/6/1924.

[mimillman]

On 11/7/2024 at 6:47 PM, Lightning said:

I think he meant 11/24/31

Big one in sight then

[DocATL]

9/24/1931.
Currently we are ranked 27th latest.

11/24/31 - I know that’s what you meant.

[DocATL]

Sorry to be redundant…couldn’t delete for some reason

[A-L-E-K]

nothing imminent, gfs with some deep fantasy threats 

gonna be in play right to the end

[Chicago Storm]

November 2024 finished as the 9th warmest November on record for Chicago.

Record Warmest November's
1. 50.0° - 1931
2. 48.5° - 1909
3. 48.2° - 2001
4. 47.4° - 2020
5. 47.1° - 1975
5. 47.1° - 1913
7. 47.0° - 1902
8. 46.8° - 2016
9. 46.2° - 2024
10. 45.8° - 1934

[Chicago Storm]

Fall 2024 finished as the 3rd warmest Fall on record for Chicago.

Record Warmest Fall's
1. 60.0° - 1931
2. 59.2° - 1963
3. 58.8° - 2024
4. 58.2° - 1971
5. 57.7° - 2016
6. 57.2° - 1953
6. 57.2° - 1922
6. 57.2° - 1920
9. 56.8° - 2021
9. 56.8° - 1927
9. 56.8° - 1914

[Maxim]

Have to imagine this will go down as the warmest year on record for Chicago, no?

[TheClimateChanger]

54 minutes ago, Maxim said:

Have to imagine this will go down as the warmest year on record for Chicago, no?

Would certainly look that way. This is computed by averaging of monthly average, so it's using the December mean to date. With the looming warmup, it might even end up somewhat above this. Rest assured, Chi-town is not alone. Pretty much everywhere is on track for a record-breaker, or certainly top 2 or 3.

[Chicago Storm]

2024 finished as the warmest year on record for Chicago.

Record Warmest Year's
1. 55.0° - 2024
2. 54.5° - 2012
2. 54.5° - 1921
4. 54.1° - 2023
5. 54.0° - 1931
6. 53.5° - 2021
7. 53.5° - 1998
8. 53.3° - 2020
9. 53.2° - 1953
10. 52.9° - 1954

[mimillman]

Random questions since I don’t know where the data is myself to calculate this:

1) What is Chicago’s average high and average low temperature by month on the 10y average compared to the 30y average?

2) What is Chicago’s by month snowfall average on the 10y vs the 30y?

[Danny8]

14 hours ago, mimillman said:

Random questions since I don’t know where the data is myself to calculate this:

1) What is Chicago’s average high and average low temperature by month on the 10y average compared to the 30y average?

2) What is Chicago’s by month snowfall average on the 10y vs the 30y?

Go to the NWS Chicago site (https://www.weather.gov/lot/). Click on "Climate and Past Weather", and you can search those things in the NowData tab. Select the "Monthly summarized data" product.

Monthly Mean Max Temperature for CHICAGO OHARE INTL AP, IL
Click column heading to sort ascending, click again to sort descending.

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Mean	31.6	35.9	47.2	59.0	70.3	80.4	84.3	82.6	76.0	63.0	48.7	36.8	59.6
1995	30.3	33.9	49.2	54.6	68.7	83.7	88.0	87.7	73.5	63.0	40.9	33.6	58.9
1996	31.3	33.9	40.2	55.4	64.4	78.0	80.1	82.1	73.3	62.2	39.8	33.5	56.2
1997	27.8	35.1	46.2	55.5	63.9	79.3	83.1	78.2	74.2	63.8	42.5	36.1	57.1
1998	35.3	45.0	45.6	58.7	75.4	79.5	84.1	82.5	78.3	64.3	52.4	42.7	62.0
1999	29.9	42.1	44.4	58.4	72.4	80.4	88.3	79.3	75.7	63.7	55.6	37.7	60.7
2000	32.1	42.2	54.6	57.6	72.1	76.8	79.8	81.8	74.6	66.1	43.8	24.4	58.8
2001	30.8	34.0	42.7	64.2	70.2	77.5	85.0	81.7	71.0	60.3	57.4	40.2	59.6
2002	38.5	40.2	43.6	58.9	65.2	81.1	86.6	82.8	78.9	57.5	44.8	36.9	59.6
2003	28.3	32.3	46.5	58.7	66.0	76.7	82.9	82.8	73.7	62.4	49.5	38.6	58.2
2004	27.4	35.8	49.3	61.4	70.9	77.3	80.5	77.0	78.4	63.0	50.3	35.8	58.9
2005	31.2	38.9	43.9	63.4	67.8	85.2	86.4	84.0	80.1	64.3	51.4	29.4	60.5
2006	42.0	36.3	46.7	64.1	69.7	78.8	85.7	83.0	71.1	57.5	50.2	40.5	60.5
2007	33.8	24.4	51.3	56.5	75.5	81.6	83.5	83.2	79.2	68.1	47.0	34.1	59.9
2008	32.0	29.7	42.5	59.8	66.2	80.9	83.8	81.8	75.2	61.6	46.3	31.5	57.6
2009	23.9	36.9	48.7	57.0	70.6	77.0	78.4	79.1	74.3	55.2	53.1	32.3	57.2
2010	27.4	32.3	50.4	65.5	71.2	80.2	87.1	85.7	74.2	66.8	50.8	29.0	60.0
2011	26.7	32.7	43.8	56.1	67.8	79.4	88.5	82.5	69.9	65.2	52.4	41.8	58.9
2012	38.5	40.2	63.3	59.8	76.5	85.5	91.5	84.0	74.5	60.5	49.0	42.5	63.8
2013	35.3	33.1	39.6	56.3	71.2	78.2	81.8	82.7	77.1	62.4	45.3	31.1	57.8
2014	24.6	25.7	40.9	59.2	71.0	81.0	79.8	82.1	73.7	60.6	41.4	36.9	56.4
2015	29.0	23.4	44.4	60.0	70.0	76.9	81.9	80.9	78.1	63.2	53.7	44.5	58.8
2016	31.7	37.2	51.5	57.4	70.1	81.9	84.4	84.3	77.7	65.8	55.3	31.1	60.7
2017	34.6	47.7	47.1	63.8	67.7	83.3	83.8	80.7	79.7	65.5	46.9	34.2	61.3
2018	31.9	38.0	44.7	50.0	76.4	80.4	85.1	84.8	77.5	60.7	39.7	39.7	59.1
2019	27.5	34.0	42.7	59.1	67.5	77.3	86.1	81.5	76.9	58.7	41.6	41.3	57.9
2020	35.8	37.3	50.9	58.0	69.1	84.0	88.3	86.4	74.6	60.9	55.7	39.3	61.7
2021	33.9	27.4	53.3	61.3	69.7	83.8	82.3	86.2	79.8	66.6	48.2	45.8	61.5
2022	28.6	35.3	49.1	55.1	72.2	82.6	83.5	83.0	76.0	63.9	51.7	35.7	59.7
2023	37.5	42.2	46.0	62.2	73.8	81.4	84.6	83.0	77.7	64.7	51.0	44.2	62.4
2024	30.7	49.2	52.9	61.6	75.2	83.6	83.8	83.8	80.3	70.1	52.3	38.4	63.5

 

Monthly Mean Min Temperature for CHICAGO OHARE INTL AP, IL
Click column heading to sort ascending, click again to sort descending.

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Mean	18.0	20.5	30.1	39.3	49.9	60.1	65.4	64.5	56.6	44.9	33.2	23.4	42.2
1995	17.7	19.0	31.2	37.4	48.8	60.9	67.2	70.3	51.5	44.4	24.6	19.0	41.0
1996	15.4	18.2	21.3	34.9	45.6	57.9	59.6	62.4	53.6	41.6	26.9	21.9	38.3
1997	10.8	22.8	29.5	34.9	43.6	57.3	63.3	60.8	54.1	42.5	30.2	26.8	39.7
1998	23.8	32.4	32.3	40.8	54.1	59.0	64.8	64.4	57.1	46.6	37.2	26.6	44.9
1999	15.3	25.9	26.8	40.8	50.9	60.3	68.4	61.3	51.1	42.0	34.5	22.0	41.6
2000	18.5	25.9	33.7	36.8	51.9	57.7	62.3	63.0	54.8	46.0	30.2	7.6	40.7
2001	18.3	18.2	25.6	40.7	49.8	57.3	64.1	64.7	52.8	43.9	39.0	26.5	41.7
2002	25.3	24.1	25.5	40.9	45.2	60.8	67.5	63.5	55.8	42.0	30.4	23.4	42.0
2003	14.3	14.9	26.9	37.9	46.5	54.2	61.8	64.4	53.0	41.2	34.2	24.6	39.5
2004	13.2	18.9	33.0	39.3	49.1	56.9	61.9	58.0	54.6	44.8	37.1	21.9	40.7
2005	17.8	26.0	26.2	39.7	46.4	63.1	64.7	64.5	58.7	46.0	32.6	17.3	41.9
2006	29.6	20.0	29.9	42.1	49.5	57.8	67.3	65.6	53.7	40.4	35.5	27.1	43.2
2007	21.9	11.5	33.6	37.0	52.0	61.1	63.9	66.4	57.0	49.9	31.7	21.6	42.3
2008	14.9	16.4	27.2	39.1	44.8	60.7	64.2	63.6	57.1	43.7	32.2	14.2	39.8
2009	7.8	19.6	30.5	37.5	49.1	58.1	60.4	61.8	56.4	42.5	37.6	20.6	40.2
2010	16.5	21.1	33.0	43.6	52.2	62.2	68.2	67.7	56.1	45.2	32.2	16.0	42.8
2011	14.5	19.6	28.8	39.3	48.0	59.5	69.5	64.4	54.4	44.6	37.4	28.6	42.4
2012	21.9	25.6	43.6	41.6	54.6	62.4	70.6	62.6	53.7	42.4	32.0	29.7	45.1
2013	17.9	19.1	25.6	37.5	50.7	58.9	64.5	63.3	57.3	43.8	29.6	15.6	40.3
2014	6.7	8.9	22.4	37.9	49.7	60.9	60.9	65.3	54.2	43.4	25.8	27.1	38.6
2015	15.5	5.7	26.3	38.8	50.7	57.8	62.7	62.6	59.8	46.2	35.5	33.5	41.3
2016	17.6	23.5	35.1	38.1	49.4	61.2	66.5	67.4	61.4	47.9	38.3	18.9	43.8
2017	23.0	28.4	31.8	43.7	48.0	61.6	65.5	62.2	59.1	49.7	32.5	20.1	43.8
2018	17.4	19.6	29.1	32.4	55.9	62.6	67.4	67.7	60.4	44.7	29.4	26.7	42.8
2019	14.5	17.8	25.9	40.3	48.5	58.2	68.2	64.3	61.9	43.1	27.9	26.6	41.4
2020	24.4	23.1	34.7	38.7	50.7	63.9	70.2	67.2	57.9	42.1	39.0	26.4	44.9
2021	24.4	13.0	35.2	42.5	50.8	64.8	66.5	68.1	60.7	52.7	32.5	30.2	45.1
2022	12.6	19.5	32.4	38.9	55.2	61.9	67.0	65.7	58.8	44.2	35.1	22.5	42.8
2023	27.1	25.5	31.6	41.3	51.0	60.2	66.7	65.5	61.2	49.4	34.7	33.8	45.7
2024	21.8	29.7	35.1	43.8	54.5	64.3	66.2	65.9	60.9	49.3	40.0	25.7	46.4

 

Monthly Total Snowfall for CHICAGO OHARE INTL AP, IL
Click column heading to sort ascending, click again to sort descending.

Year	Jul	Aug	Sep	Oct	Nov	Dec	Jan	Feb	Mar	Apr	May	Jun	Season
Mean	T	T	T	0.2	1.9	7.4	12.5	10.0	4.6	1.2	T	T	38.5
1994-1995	0.0	0.0	0.0	0.0	T	7.0	13.1	0.4	3.5	0.1	0.0	0.0	24.1
1995-1996	T	0.0	0.0	T	3.9	9.9	5.9	M	M	M	T	0.0	M
1996-1997	M	0.0	0.0	0.0	M	T	M	M	M	1.7	0.0	T	M
1997-1998	0.0	0.0	0.0	0.0	M	7.1	M	0.0	M	M	0.0	T	M
1998-1999	0.0	0.0	0.0	0.0	0.2	1.0	29.6	1.9	18.2	0.0	0.0	0.0	50.9
1999-2000	0.0	0.0	0.0	0.0	0.0	3.5	13.6	11.6	T	1.6	0.0	T	30.3
2000-2001	0.0	0.0	0.0	T	0.1	30.9	1.5	2.2	4.2	0.3	T	T	39.2
2001-2002	T	0.0	0.0	T	0.0	1.6	15.5	1.8	11.2	1.0	0.0	T	31.1
2002-2003	0.0	0.0	0.0	0.0	4.7	8.0	4.3	1.5	7.1	3.0	0.0	0.0	28.6
2003-2004	T	T	0.0	0.0	T	1.5	14.6	6.5	2.2	0.0	0.0	0.0	24.8
2004-2005	0.0	0.0	0.0	0.0	5.1	0.6	27.8	2.7	3.2	T	T	0.0	39.4
2005-2006	0.0	0.0	0.0	T	1.9	10.4	5.5	2.5	5.7	T	0.0	T	26.0
2006-2007	0.0	0.0	T	0.3	0.4	5.8	3.5	20.3	2.3	3.0	0.0	0.0	35.6
2007-2008	0.0	0.0	0.0	0.0	0.3	17.6	12.7	21.8	7.9	T	0.0	0.0	60.3
2008-2009	0.0	T	0.0	T	0.6	21.9	21.5	4.5	2.1	2.1	0.0	0.0	52.7
2009-2010	0.0	0.0	0.0	T	T	20.8	9.1	22.5	1.8	T	0.0	0.0	54.2
2010-2011	0.0	0.0	0.0	0.0	T	16.2	10.6	29.0	1.0	0.6	T	T	57.4
2011-2012	0.0	0.0	0.0	0.0	T	1.7	12.2	5.6	0.3	0.0	T	0.0	19.8
2012-2013	0.0	0.0	0.0	0.0	T	0.9	2.6	16.1	10.4	0.1	0.0	T	30.1
2013-2014	0.0	0.0	0.0	T	0.9	14.2	33.7	19.5	12.3	1.4	0.0	0.0	82.0
2014-2015	0.0	0.0	0.0	0.1	2.8	T	13.9	26.8	7.1	T	0.0	T	50.7
2015-2016	0.0	T	0.0	0.0	11.2	4.5	6.3	5.5	2.6	1.1	0.0	0.0	31.2
2016-2017	0.0	0.0	0.0	0.0	T	17.7	0.6	T	7.8	0.0	0.0	T	26.1
2017-2018	T	0.0	0.0	T	0.1	5.3	4.6	20.3	2.6	3.2	0.0	0.0	36.1
2018-2019	0.0	0.0	0.0	T	12.7	1.4	18.2	9.0	0.3	7.9	T	0.0	49.5
2019-2020	0.0	0.0	0.0	4.6	3.7	2.0	7.8	8.8	3.2	4.7	0.0	0.0	34.8
2020-2021	T	0.0	0.0	T	0.7	2.8	21.9	21.6	1.8	T	0.0	0.0	48.8
2021-2022	0.0	0.0	0.0	0.0	T	1.9	13.9	12.8	3.8	0.4	0.0	T	32.8
2022-2023	T	0.0	0.0	T	1.1	3.2	9.9	3.7	1.8	0.5	0.0	0.0	20.2
2023-2024	0.0	0.0	0.0	0.9	1.8	1.2	16.1	1.2	1.0	T	0.0	T	22.2