| 2025-07-15 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | 15 Jul: FG/MST 67.8° REL HMDTY 95% AQI 76 (poor!) DP 66.2° WND CLM 0.0 MPH WND BRM 30.03 STDY VIS 5 MI Sunrise 5:28 Sunset 8:23. 14 Jul: Hi 88.0° (1740) Lo 65.8° (0700) CDD 12 GUST SW 7 MPH (1455). *** 2024: 87° and 80% humidity at 2115 hours proved to be the perfect pressure cooker to incubate a record 32 tornadoes across Northeastern Illinois and NW Indiana in 2024. Our Lincoln-Way area was spared any serious damage NNNN |
| 2025-07-14 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | 14 Jul: HZ 61.5° REL HMDTY 99% AQI 114 (unhealthy!) DP 61.3° WND CLM 0.0 MPH WND BRM 30.05 STDY VIS 2 MI Sunrise 5:27 Sunset 8:24. 13 Jul: Hi 82.0° (1525) Lo 61.5° (0618) CDD 9 GUST W 8 MPH (1555). *** 1874’s “Little Great Chicago Fire” lasted 8 hours, burned 47 acres, killed 20 in Russian/Polish/black neighborhoods on a 90° day with strong southwest winds and little rain since early June 12. The inferno raged from 12th Street (today’s Roosevelt Road) to Van Buren, and from Michigan Avenue to Wabash. One factor that slowed the conflagration from being worse? Many places in its path were still in rubble from the more devastating fire nearly three years earlier. NNNN |
| 2025-07-13 | 7:00 AM | T | NA | NA | NA | NA | | 13 Jul: CLR 57.1° REL HMDTY 95% AQI 70 (poor!) DP 65.3° WND CLM 0.0 MPH WND BRM 30.00 RSG VIS 7 MI Sunrise 5:27 Sunset 8:25. 12 Jul: Hi 84.7° (1810) Lo 66.9° (0600) CDD 12 GUST W 9 MPH (1555). *** The 1995 killer heat wave began on this date when 104° of blow-torch weather descended on Northeastern Illinois. The awful 13th-16th event directly or indirectly left 583 dead. NNNN |
| 2025-07-12 | 7:00 AM | 0.02 | NA | NA | NA | NA | | 12 Jul: CLR 70.3° REL HMDTY 90% AQI 23 DP 67.1° WND CLM 0.0 MPH WND BRM 29.88 RSG VIS 10 MI Sunrise 5:26 Sunset 8:25. 11 Jul: Hi 91.1° (1545) Lo 69.3° (0650) CDD 15 GUST NW 23 MPH (2315). *** Great Hickory/Spring Creek Flood in Joliet/New Lenox began on this date in 1957 amid high temperature of 90° and much humidity. Rain began at 1430 hours and did not end until 0530 the next morning. 6.73” rain fell in five hours and eventually totaled 8.13” for 15 hours. 4,000 homes were damaged and the entire south/southeast sides of the City of Champions were under water. Incredibly, the vast EJ&E rail yard was covered by 15’of H2O and expansive Pilcher Park was flooded. New Lenox was cut off on three sides with most main roads swamped. On the light side, Joliet people caught medium-sized bullheads on their property nearly a mile from the closest body of water. Days after the waters receded, Jolietans found possessions from New Lenox residents (6 miles to the east!) in their yards. NNNN |
| 2025-07-11 | 7:00 AM | 0.76 | NA | NA | NA | NA | | 11 Jul: CLRNG 72.1° REL HMDTY 99% AQI 25 DP 71.8° WND CLM 0.0 MPH WND BRM 29.88 RSG VIS 10 MI Sunrise 5:25 Sunset 8:26. 10 Jul: Hi 89.1° (1430) Lo 69.4° (0700) CDD 11 GUST W 28 MPH (1835). *** 93° high and 70° low with full sun came our way as my brother was born in 1966. I’ve always said he was hot stuff and quite bright! NNNN |
| 2025-07-10 | 6:00 AM | 0.10 | NA | NA | NA | NA | | 10 Jul: FG/MST 65.5° REL HMDTY 98% AQI 31 DP 64.9° WND CLM 0.0 MPH WND BRM 29.96 FLG VIS 4 MI Sunrise 5:24 Sunset 8:27. 9 Jul: Hi 90.1° (1615) Lo 65.5° (0548) CDD 12 GUST E 16 MPH (1755). *** More Dirty Thirties heat! 80° was the overnight low in 1936 Joliet. NNNN |
| 2025-07-09 | 7:00 AM | 2.19 | NA | NA | NA | NA | | 9 Jul: FG/MST 67.5° REL HMDTY 99% AQI 33 DP 66.9° WND CLM 0.0 MPH WND BRM 30.01 STDY VIS 4 MI Sunrise 5:24 Sunset 8:27. 8 Jul: Hi 87.1° (1330) Lo 67.3° (0555) CDD 12 GUST SW 17 MPH (2015). *** A rather non-red-letter day in July weather history was interrupted by 2.5” rain in 1946. NNNN |
| 2025-07-08 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | 8 Jul: CLR 66.9° REL HMDTY 78% AQI 74 (poor) DP 59.7° WND CLM 0.0 MPH WND BRM 3005 STDY VIS 10 MI Sunrise 5:23 Sunset 8:27. 7 Jul: Hi 86.4° (1650) Lo 64.4° (0350) CDD 9 GUST E 9 MPH (1255). *** If July 1983 hadn’t been cold enough (see the IL-WL-63 CoCoRaHS entry from yesterday), 2.5” rain drenched the chilled landscape on this date. NNNN |
| 2025-07-07 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | 7 Jul: OVRCST 65.5° REL HMDTY 89% AQI 26 DP 69.3° WND N 3.0 MPH WND BRM 30.00 RSG VIS 10 MI Sunrise 5:22 Sunset 8:27. 6 Jul: Hi 90.0° (1635) Lo 64.9° (0435) CDD 11 GUST SW 21 MPH (0915). *** Coldest July reading ever in local annals shivered us in 1983 when 45° showed on early morning thermometers. NNNN |
| 2025-07-06 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | 6 Jul: CLRNG 75.7° REL HMDTY 81% AQI 40 DP 69.3° WND SW 6.0 MPH WND BRM 29.85 STDY VIS 10 MI Sunrise 5:22 Sunset 8:28. 5 Jul: Hi 94.3° (1615) Lo 75.0° (0700) CDD 20 GUST SW 23 MPH (1755). *** The Dirty Thirties were symbolized by EIGHT straight days of temperatures over 100° (6th-14th) in 1936. NNNN |
| 2025-07-05 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | 5 Jul: CLR 73.0° REL HMDTY 83% AQI 69 (POOR) DP 67.5° WND CLM 0.0 MPH WND BRM 30.03 STDY VIS 10 MI Sunrise 5:21 Sunset 8:28. 4 Jul: Hi 93.6° (1630) Lo 71.8° (0505) CDD 18 GUST SW 16 MPH (1455). *** Wow, the hottest 4th of July happened just 13 years ago in 2012 with 102°. This was the first of three consecutive days of a 100° reading which only happened two other times in Northeastern Illinois history. NNNN |
| 2025-07-04 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | 3 Jul: CLR 66.7° REL HMDTY 96% AQI 46 (fair) DP 65.5° WND CLM 0.0 MPH WND BRM 29.99 STDY VIS 10 MI Sunrise 5:21 Sunset 8:28. 2 Jul: Hi 91.0° (1700) Lo 65.1° (0505) CDD 16 GUST W 10 MPH (1415). *** Thomas Jefferson took weather notes in Philadelphia on that glorious day in Philadelphia in 1776 when independence was officially declared. At 6 a.m. temperature was 68°, 9 a.m. 72°, 1 p.m. 76° (!!!!!), and at 9 p.m. 73° with increasing clouds and a breeze from the southwest. No notes from that afternoon? Hmm, Mr. Jefferson and 55 other men were inside approving and signing a certain document. History can excuse him if his mind was off the weather for a bit. NNNN |
| 2025-07-03 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | 3 Jul: CLR 66.7° REL HMDTY 96% AQI 46 (fair) DP 65.5° WND CLM 0.0 MPH WND BRM 29.99 STDY VIS 10 MI Sunrise 5:21 Sunset 8:29. 2 Jul: Hi 91.0° (1700) Lo 65.1° (0505) CDD 16 GUST W 10 MPH (1415). *** Coldest Joliet July came in 2009 which averaged but 57.9°. NNNN |
| 2025-07-02 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | 2 Jul: CLR 65.8° REL HMDTY 93% AIR QLTY 51 (poor) DP 63.3° WND CLM 0.0 MPH WND BRM 30.00 STDY VIS 10 MI Sunrise 5:21 Sunset 8:29. 1 Jul: Hi 88.0° (1700) Lo 64.2° (0535) CDD NA GUST NW 8 MPH (1455). *** Gettysburg (Pennsylvania) weather in early 1863: 1 July temperature at 2 p.m. was 76° and sky cloudy during initial skirmish, 2 July was 81° and partly cloudy at Little Round Top, and 87° at 2 p.m. on 3 July, the time of Pickett's Charge. Lee's retreat from Gettysburg on 4 July was hampered by heavy rain but Meade didn’t attempt to follow him and the war dragged on for almost another two years. NNNN |
| 2025-07-01 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | 1 Jul: CLR 69.1° REL HMDTY 88% AIR QLTY 21 DP 65.1° WND NW 3.4 MPH WND BRM 29.92 RSG VIS 10 MI Sunrise 5:21 Sunset 8:29. 30 Jun: Hi 90.0° (1335) Lo 68.4° (0550) CDD 17 GUST NW 13 MPH (1355). *** Hottest July in Joliet was in the severe drought year of 2012 with an average temperature of 80.1°. Whew! NNNN |
| 2025-06-30 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | Rain: 2025 16.29" (normal 18.40") June 3.66" (normal 4.15") 30 Jun: CLR 73.8° REL HMDTY 94% AIR QLTY 19 DP 71.6° WND CLM 0.0 MPH WND BRM 29.86 STDY VIS 10 MI Sunrise 5:21 Sunset 8:29. 29 Jun: PK HEAT INDEX 102.7° Hi 94.5° (1515) Lo 72.9° (0410) CDD 19 GUST S 24 MPH (1745). *** Wettest June (9.95”) was in 1993 while the driest (0.12”) was 103 years ago in 1922. NNNN |
| 2025-06-29 | 7:00 AM | 0.00 | 0.0 | NA | NA | NA | | |