Jacksonville 2 Weather Records (USC00114447)

Record envelope, standing records and threshold days for Jacksonville 2 (USC00114447), Illinois, United States, with 79 years of record.

Key Facts for Jacksonville 2

Jacksonville 2 (USC00114447) is a weather station in Illinois, United States at 39.71 latitude and -90.23 longitude, 191 m (626 ft) above sea level.
The station reports from 1948 to 2026, 79 years of record.
1,464 records set at Jacksonville 2 still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Illinois, United States, 39.71 latitude, -90.23 longitude.
Elevation: 191 m (626 ft).
Period of record: 1948 to 2026, 79 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

40 days at or beyond a record

The band shows the record high and record low for each calendar day at Jacksonville 2. The lines show the 2026 daily maximum and minimum. 40 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Jacksonville 2, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	21.1 C (70.0 F)	-25.0 C (-13.0 F)	11.1 C (52.0 F)	-21.1 C (-6.0 F)
Feb	26.7 C (80.1 F)	-22.2 C (-8.0 F)	19.4 C (66.9 F)	-17.8 C (0.0 F)
Mar	28.9 C (84.0 F)	-20.0 C (-4.0 F)	27.8 C (82.0 F)	-10.0 C (14.0 F)
Apr	33.3 C (91.9 F)	-8.9 C (16.0 F)	29.4 C (84.9 F)	-3.9 C (25.0 F)
May	35.6 C (96.1 F)	0.0 C (32.0 F)	31.7 C (89.1 F)	5.0 C (41.0 F)
Jun	40.0 C (104.0 F)	8.3 C (46.9 F)	35.0 C (95.0 F)	11.1 C (52.0 F)
Jul	40.0 C (104.0 F)	10.6 C (51.1 F)	34.4 C (93.9 F)	18.3 C (64.9 F)
Aug	40.0 C (104.0 F)	8.9 C (48.0 F)	35.6 C (96.1 F)	8.9 C (48.0 F)
Sep	38.9 C (102.0 F)	3.3 C (37.9 F)	36.7 C (98.1 F)	5.6 C (42.1 F)
Oct	34.4 C (93.9 F)	-5.0 C (23.0 F)	31.7 C (89.1 F)	0.6 C (33.1 F)
Nov	27.8 C (82.0 F)	-14.4 C (6.1 F)	26.1 C (79.0 F)	-8.9 C (16.0 F)
Dec	22.2 C (72.0 F)	-23.3 C (-9.9 F)	21.1 C (70.0 F)	-20.0 C (-4.0 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at Jacksonville 2 still stand. 2012 holds the most, with 113.

Standing records at Jacksonville 2 by the year they were set
Year set	Standing records
2006	81
2007	93
2008	64
2009	75
2010	52
2011	77
2012	113
2013	82
2014	98
2015	61
2016	65
2017	92
2018	92
2019	58
2020	48
2021	61
2022	61
2023	58
2024	60
2025	73

Wettest Day of Each Month

Sep: 120.1 mm (4.7 in)

The wettest day on record for each calendar month at Jacksonville 2. The most was 120.1 mm (4.7 in) on 21 September 2009.

Record daily precipitation for each month at Jacksonville 2
Month	Record daily precipitation (mm)	Date
Jan	86.4 mm (3.4 in)	8 January 2008
Feb	49.3 mm (1.9 in)	21 February 2018
Mar	57.7 mm (2.3 in)	13 March 2006
Apr	89.4 mm (3.5 in)	30 April 2017
May	71.9 mm (2.8 in)	1 May 2019
Jun	110.5 mm (4.4 in)	18 June 2011
Jul	105.7 mm (4.2 in)	22 July 2013
Aug	54.9 mm (2.2 in)	26 August 2004
Sep	120.1 mm (4.7 in)	21 September 2009
Oct	91.4 mm (3.6 in)	24 October 2021
Nov	70.6 mm (2.8 in)	18 November 2003
Dec	60.5 mm (2.4 in)	27 December 2015

Period of Record Coverage

2006 to 2025

20 years of record at Jacksonville 2, 2006 to 2025. 1 years have data for under 90 percent of days and are left out of rankings: 2006.

Days with data per year at Jacksonville 2
Year	Days with data	Share of year	Complete
2006	300	82%	No
2007	365	100%	Yes
2008	355	97%	Yes
2009	356	98%	Yes
2010	360	99%	Yes
2011	355	97%	Yes
2012	363	99%	Yes
2013	363	99%	Yes
2014	363	99%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	362	99%	Yes
2019	334	92%	Yes
2020	336	92%	Yes
2021	356	98%	Yes
2022	360	99%	Yes
2023	358	98%	Yes
2024	362	99%	Yes
2025	365	100%	Yes

Latest Records

No records were set at this station in the latest data.

Climate Trend

19 complete years, 2007 to 2025

One stripe for each of 19 complete years at Jacksonville 2, 2007 to 2025. Blue stripes are years cooler than the station's own mean of 12.0 C (53.6 F); red stripes are warmer. The coolest year was 2014, at 9.9 C (49.8 F), and the warmest was 2012, at 13.8 C (56.8 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Jacksonville 2 as warming stripes, 2007 to 2025
Year	Annual mean temperature	Difference from the station mean
2007	12.8 C	+0.78 C
2008	11.0 C	-1.04 C
2009	11.2 C	-0.76 C
2010	12.1 C	+0.11 C
2011	12.3 C	+0.31 C
2012	13.8 C	+1.80 C
2013	11.0 C	-1.03 C
2014	9.9 C	-2.08 C
2015	11.8 C	-0.17 C
2016	12.8 C	+0.84 C
2017	12.8 C	+0.79 C
2018	11.6 C	-0.35 C
2019	11.3 C	-0.72 C
2020	11.7 C	-0.28 C
2021	12.0 C	+0.05 C
2022	11.0 C	-0.99 C
2023	13.1 C	+1.06 C
2024	13.3 C	+1.28 C
2025	12.4 C	+0.37 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1948 to 2026

Yearly extremes at Jacksonville 2: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	2007	36.7 C (98.1 F)	21
Coldest night (TNn)	-25.0 C (-13.0 F)	2019	-20.6 C (-5.1 F)	21
Wettest day (Rx1day)	120.1 mm (4.7 in)	2009	61.5 mm (2.4 in)	29
Wettest five days (Rx5day)	164.3 mm (6.5 in)	2011	104.3 mm (4.1 in)	28
Longest dry spell (CDD)	38 days	2013	19 days	28

Hottest day (TXx)

The hottest day of the year at Jacksonville 2, 1948 to 2026. The record is 40.0 C (104.0 F) in 2007, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Jacksonville 2 by year
Year	Hottest day (TXx)
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1970	n/a
2003	n/a
2004	n/a
2005	n/a
2006	38.3 C (100.9 F)
2007	40.0 C (104.0 F)
2008	36.7 C (98.1 F)
2009	36.1 C (97.0 F)
2010	37.2 C (99.0 F)
2011	38.9 C (102.0 F)
2012	40.0 C (104.0 F)
2013	36.7 C (98.1 F)
2014	35.6 C (96.1 F)
2015	35.6 C (96.1 F)
2016	35.6 C (96.1 F)
2017	36.7 C (98.1 F)
2018	35.6 C (96.1 F)
2019	35.0 C (95.0 F)
2020	34.4 C (93.9 F)
2021	35.0 C (95.0 F)
2022	36.1 C (97.0 F)
2023	37.8 C (100.0 F)
2024	37.2 C (99.0 F)
2025	36.7 C (98.1 F)
2026	31.7 C (89.1 F)

Coldest night (TNn)

The coldest night of the year at Jacksonville 2, 1948 to 2026. The record is -25.0 C (-13.0 F) in 2019, marked on the chart; the median year is -20.6 C (-5.1 F).

Coldest night (TNn) at Jacksonville 2 by year
Year	Coldest night (TNn)
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1970	n/a
2003	n/a
2004	n/a
2005	n/a
2006	-17.2 C (1.0 F)
2007	-20.0 C (-4.0 F)
2008	-17.8 C (0.0 F)
2009	-21.7 C (-7.1 F)
2010	-21.7 C (-7.1 F)
2011	-20.6 C (-5.1 F)
2012	-14.4 C (6.1 F)
2013	-17.2 C (1.0 F)
2014	-23.9 C (-11.0 F)
2015	-21.7 C (-7.1 F)
2016	-20.0 C (-4.0 F)
2017	-20.6 C (-5.1 F)
2018	-24.4 C (-11.9 F)
2019	-25.0 C (-13.0 F)
2020	-20.0 C (-4.0 F)
2021	-20.6 C (-5.1 F)
2022	-23.3 C (-9.9 F)
2023	-14.4 C (6.1 F)
2024	-24.4 C (-11.9 F)
2025	-21.1 C (-6.0 F)
2026	-20.6 C (-5.1 F)

Wettest day (Rx1day)

The wettest day of the year at Jacksonville 2, 1948 to 2026. The record is 120.1 mm (4.7 in) in 2009, marked on the chart; the median year is 61.5 mm (2.4 in).

Wettest day (Rx1day) at Jacksonville 2 by year
Year	Wettest day (Rx1day)
1948	83.3 mm (3.3 in)
1949	58.2 mm (2.3 in)
1950	44.2 mm (1.7 in)
1951	58.9 mm (2.3 in)
1970	7.6 mm (0.30 in)
2003	70.6 mm (2.8 in)
2004	54.9 mm (2.2 in)
2005	41.7 mm (1.6 in)
2006	57.7 mm (2.3 in)
2007	68.1 mm (2.7 in)
2008	86.4 mm (3.4 in)
2009	120.1 mm (4.7 in)
2010	82.8 mm (3.3 in)
2011	110.5 mm (4.4 in)
2012	115.3 mm (4.5 in)
2013	105.7 mm (4.2 in)
2014	101.6 mm (4.0 in)
2015	60.5 mm (2.4 in)
2016	45.0 mm (1.8 in)
2017	89.4 mm (3.5 in)
2018	61.5 mm (2.4 in)
2019	71.9 mm (2.8 in)
2020	61.0 mm (2.4 in)
2021	91.4 mm (3.6 in)
2022	48.3 mm (1.9 in)
2023	41.1 mm (1.6 in)
2024	64.8 mm (2.6 in)
2025	55.9 mm (2.2 in)
2026	58.9 mm (2.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Jacksonville 2, 1948 to 2026. The record is 164.3 mm (6.5 in) in 2011, marked on the chart; the median year is 104.3 mm (4.1 in).

Wettest five days (Rx5day) at Jacksonville 2 by year
Year	Wettest five days (Rx5day)
1948	116.8 mm (4.6 in)
1949	77.5 mm (3.1 in)
1950	81.8 mm (3.2 in)
1951	147.2 mm (5.8 in)
1970	n/a
2003	75.0 mm (3.0 in)
2004	69.6 mm (2.7 in)
2005	71.1 mm (2.8 in)
2006	106.0 mm (4.2 in)
2007	83.3 mm (3.3 in)
2008	123.4 mm (4.9 in)
2009	127.4 mm (5.0 in)
2010	139.9 mm (5.5 in)
2011	164.3 mm (6.5 in)
2012	127.8 mm (5.0 in)
2013	106.2 mm (4.2 in)
2014	153.9 mm (6.1 in)
2015	132.1 mm (5.2 in)
2016	88.0 mm (3.5 in)
2017	128.0 mm (5.0 in)
2018	87.1 mm (3.4 in)
2019	136.9 mm (5.4 in)
2020	102.6 mm (4.0 in)
2021	144.2 mm (5.7 in)
2022	68.1 mm (2.7 in)
2023	69.1 mm (2.7 in)
2024	102.2 mm (4.0 in)
2025	62.8 mm (2.5 in)
2026	70.4 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Jacksonville 2, 1948 to 2026. The record is 38 days in 2013, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Jacksonville 2 by year
Year	Longest dry spell (CDD)
1948	22 days
1949	13 days
1950	29 days
1951	12 days
1970	n/a
2003	10 days
2004	25 days
2005	20 days
2006	18 days
2007	19 days
2008	14 days
2009	15 days
2010	27 days
2011	17 days
2012	21 days
2013	38 days
2014	12 days
2015	27 days
2016	17 days
2017	27 days
2018	18 days
2019	12 days
2020	17 days
2021	15 days
2022	17 days
2023	21 days
2024	19 days
2025	31 days
2026	20 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

Data for Jacksonville 2 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Jacksonville 2 threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).