NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Sugar Grove, IL
Every tropical system within 75 miles since 1851 and every tornado within 25 miles since 1950.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
1 tropical system has passed within 75 miles of Sugar Grove, Illinois since 1851, 0 of them at hurricane strength; the most recent was an unnamed storm in 1900. Since 1950, 176 tornadoes have touched down within 25 miles, 8 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 1
- Tornadoes
- 176
- EF3 or stronger
- 8
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
35 deaths in all
What the records show for Sugar Grove
None of the 1 tropical systems was at hurricane strength as it passed Sugar Grove; the strongest was an unnamed storm in 1900, a tropical storm with 56 mph winds when its centre passed 56 miles away. Of the 548 Illinois cities on this site, 57% have more tropical storms and hurricanes within 75 miles than Sugar Grove. The strongest of the 176 tornadoes within 25 miles was an F5 on August 28, 1990; its path came within 9 miles, and it killed 29 people. Of the 176, 4 had paths within 5 miles of the city centre, and 100 have come since 2000. June has had the most tornadoes, 39. The most recent tornado was on March 14, 2025. Sugar Grove has more tornadoes within 25 miles than 80% of the 548 Illinois cities. Hail has been reported within 10 miles 155 times since 1962, with stones up to 3 inches (tea cup size). Sugar Grove has more hail reports within 10 miles than 68% of the 548 Illinois cities.
Compare Sugar Grove's storm record with another city →
Tropical storms and hurricanes near Sugar Grove
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 1900 | Unnamed 1900 stormSep 11 | 56 mi | Tropical storm (56 mph) | Category 4 |
Strength is the sustained wind on the track at the closest point, which is not the wind felt in Sugar Grove: a hurricane's worst winds sit within a few dozen miles of its centre, and inland cities are usually past that.
Tornadoes within 25 miles of Sugar Grove
By decade
- 2020s63(1 EF3+)
- 2010s15
- 2000s22
- 1990s11(2 EF3+)
- 1980s12(1 EF3+)
- 1970s26(4 EF3+)
- 1960s19
- 1950s8
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Aug 28, 1990 | F5 | 9 mi | 16.4 mi | 29 / 350 |
| Jun 13, 1976 | F4 | 25 mi | 3.3 mi | 2 / 23 |
| Jun 29, 1979 | F4 | 18 mi | 5.4 mi | 0 / 1 |
| Apr 27, 1984 | F3 | 17 mi | 9 mi | 1 / 5 |
| Jun 20, 2021 | EF3 | 13 mi | 17.6 mi | 0 / 11 |
| Mar 27, 1991 | F3 | 23 mi | 15 mi | 0 / 7 |
| Mar 12, 1976 | F3 | 11 mi | 22.6 mi | 0 / 3 |
| Jul 17, 1972 | F3 | 23 mi | 81.5 mi | 0 / 0 |
| Nov 12, 1965 | F2 | 25 mi | 35.9 mi | 2 / 90 |
| Apr 6, 1972 | F2 | 22 mi | 6.8 mi | 1 / 22 |
| Jul 16, 1980 | F2 | 24 mi | 1.4 mi | 0 / 0 |
| Jun 25, 1978 | F2 | 21 mi | 0.9 mi | 0 / 0 |
The strongest 12 of 176, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Sugar Grove
The Storm Prediction Center has 155 hail reports within 10 miles of Sugar Grove since 1962, made on 70 separate days. Of these, 113 were 1 inch across or larger, and 21 reached 2 inches. The largest, 3 inches (tea cup size), fell on April 4, 2023. The most recent report is from June 8, 2025. April has the most reports, 47.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Sugar Grove
The nearest NOAA station with 1991–2020 climate normals is Chicago Aurora Municipal Airport, IL, 2 miles southwest of Sugar Grove at 710 feet. July is the warmest, with an average high of 84°F and low of 62°F; January is the coolest, at 31°F and 15°F. May is the wettest at 4.1 inches of precipitation on average and January the driest at 1.3 inches; the year adds up to 33.9 inches over 67 days with at least a tenth of an inch. Highs reach 90°F on about 16 days a year, almost all from May to September. Lows fall below freezing on about 141 nights a year. That 33.9 inches is more than at 2 of the 146 Illinois stations used on this site (1%). North Aurora, 7 miles east, has its own station (Aurora, IL): 39.7 inches a year, 5.8 more than here, and the same July average high, 84°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" |
|---|---|---|---|---|
| Jan | 31 | 15 | 1.3 | 4 |
| Feb | 35 | 18 | 1.4 | 3 |
| Mar | 48 | 28 | 2.2 | 5 |
| Apr | 60 | 37 | 3.6 | 7 |
| May | 72 | 49 | 4.1 | 8 |
| Jun | 81 | 59 | 4.0 | 8 |
| Jul | 84 | 62 | 3.7 | 6 |
| Aug | 82 | 60 | 3.4 | 6 |
| Sep | 76 | 52 | 3.0 | 5 |
| Oct | 63 | 41 | 3.2 | 6 |
| Nov | 48 | 29 | 2.3 | 5 |
| Dec | 36 | 21 | 1.7 | 4 |
| Year | 60 | 39 | 33.9 | 67 |
Averages for 1991–2020 at Chicago Aurora Municipal Airport, IL (710 ft), from NOAA NCEI U.S. Climate Normals. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Floods, thunderstorm wind and lightning near Sugar Grove
Since 1996, the National Weather Service has logged 382 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Sugar Grove: 336 thunderstorm wind reports, 19 floods, 14 flash floods, 10 heavy rain events and 3 lightning strikes. They killed 0 people and injured 1, and the NWS estimated $3.5 million in property and crop damage. The strongest thunderstorm gust on record here was 83 mph, on June 8, 2025. August has had the most flash floods, 7 of 14. Of the 547 Illinois cities on this site with a flash flood on record, 221 have had fewer than Sugar Grove.
May 30, 2004: thunderstorm wind 6 miles from the centre of Sugar Grove — 1 injured.
September 14, 2008: flash flood 8 miles from the centre of Sugar Grove — $2.0 million damage.
July 27, 2011: lightning strike 9 miles from the centre of Sugar Grove — $300,000 damage.
Source: NOAA NCEI Storm Events Database, events whose starting point is on record, 1996 to June 30, 2026. Damage is the NWS estimate in the dollars of the year, not insured losses, and NWS notes that some reports are unverified.
Flood insurance claims, disaster declarations and FEMA risk ratings
Flood insurance policyholders in Sugar Grove's ZIP code 60554 have filed 11 claims with the National Flood Insurance Program since 1979, and were paid $77,000 for buildings and contents, in the dollars of each year. 45% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 320 Illinois cities on this site with 10 or more claims, 6 have fewer than Sugar Grove.
Kane County, which includes Sugar Grove, has been named in 16 federal disaster or emergency declarations since 1967, 11 of them major disasters (by incident: 4 floods, 4 snowstorms, 3 severe storms, 2 biological emergencies). The latest major disaster declaration was Covid-19 Pandemic, on March 26, 2020. FEMA's National Risk Index gives Kane County a Relatively High rating for natural hazard risk overall; by hazard: Relatively High for tornadoes, inland flooding and lightning; Relatively Moderate for strong wind and heat waves; Relatively Low for hail; Very Low for hurricanes. It models the county's expected loss from all 18 hazards it covers at $198.1 million a year, the 5th highest of 102 Illinois counties; of the hazards above, the largest share, $99.0 million (50%), is from inland flooding.
Claims: FEMA, OpenFEMA Dataset FIMA NFIP Redacted Claims – v3, summed over ZIP codes; payments in the dollars of each year, not adjusted for inflation. Declarations: Disaster Declarations Summaries – v2, by county. Retrieved October 25, 2026. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Risk ratings: FEMA, National Risk Index county table, December 2025 (v1.20), retrieved October 26, 2026; ratings compare counties nationwide, are meant for planning and are no substitute for a local risk assessment. This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
What counts as a pass, the distances and the sources: how this storm history is built.