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Rochelle 6 NW Weather Records (USC00117349)

Record envelope, standing records and threshold days for Rochelle 6 NW (USC00117349), Illinois, United States, with 56 years of record.

Key Facts for Rochelle 6 NW

  • Rochelle 6 NW (USC00117349) is a weather station in Illinois, United States at 41.95 latitude and -89.17 longitude, 238 m (781 ft) above sea level.
  • The station reports from 1923 to 1978, 56 years of record.
  • 1,464 records set at Rochelle 6 NW still stand.
  • Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
  • Rochelle 6 NW set a daily record precipitation of 48.5 mm (1.9 in) on 18 September 1978.

About the Station

  • Location: Illinois, United States, 41.95 latitude, -89.17 longitude.
  • Elevation: 238 m (781 ft).
  • Period of record: 1923 to 1978, 56 years.
  • Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Rochelle 6 NW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Rochelle 6 NW. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Rochelle 6 NW. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Rochelle 6 NW, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan17.2 C (63.0 F)-31.1 C (-24.0 F)n/an/a
Feb20.6 C (69.1 F)-30.0 C (-22.0 F)n/an/a
Mar26.1 C (79.0 F)-26.1 C (-15.0 F)n/an/a
Apr33.9 C (93.0 F)-12.2 C (10.0 F)n/an/a
May33.9 C (93.0 F)-5.0 C (23.0 F)n/an/a
Jun37.2 C (99.0 F)2.2 C (36.0 F)n/an/a
Jul37.8 C (100.0 F)6.1 C (43.0 F)n/an/a
Aug37.2 C (99.0 F)3.9 C (39.0 F)n/an/a
Sep35.0 C (95.0 F)-3.9 C (25.0 F)n/an/a
Oct32.8 C (91.0 F)-8.9 C (16.0 F)n/an/a
Nov25.0 C (77.0 F)-23.3 C (-9.9 F)n/an/a
Dec20.0 C (68.0 F)-30.6 C (-23.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Rochelle 6 NW by the year they were set 1,464 records at Rochelle 6 NW still stand. 1963 holds the most, with 72. 0204060801940: 201941: 421942: 501943: 471944: 601945: 511946: 571947: 561948: 121955: 191956: 391957: 381958: 471959: 631960: 681961: 291962: 571963: 721964: 551965: 441966: 551967: 441968: 331969: 341970: 371971: 461972: 371973: 401974: 441975: 381976: 631977: 511978: 16194019441948195819621966197019741978
1,464 records at Rochelle 6 NW still stand. 1963 holds the most, with 72.
Standing records at Rochelle 6 NW by the year they were set
Year setStanding records
194020
194142
194250
194347
194460
194551
194657
194756
194812
195519
195639
195738
195847
195963
196068
196129
196257
196372
196455
196544
196655
196744
196833
196934
197037
197146
197237
197340
197444
197538
197663
197751
197816

All-Time Record Progression

2 new records
When Rochelle 6 NW set new all-time records 2 all-time records were set at Rochelle 6 NW between 10 October 1954 and 29 March 1972. Each dot is a new record. Record daily precipitationRecord daily snowfall10 October 1954: Record daily precipitation 142.2 mm (5.6 in)29 March 1972: Record daily snowfall 28.2 cm (11.1 in)1955196019651970
2 all-time records were set at Rochelle 6 NW between 10 October 1954 and 29 March 1972. Each dot is a new record.
When Rochelle 6 NW set new all-time records
DateKindDetail
1954-10-10Record daily precipitationRecord daily precipitation 142.2 mm (5.6 in)
1972-03-29Record daily snowfallRecord daily snowfall 28.2 cm (11.1 in)

Wettest Day of Each Month

Oct: 142.2 mm (5.6 in)
Record daily precipitation for each month at Rochelle 6 NW The wettest day on record for each calendar month at Rochelle 6 NW. The most was 142.2 mm (5.6 in) on 10 October 1954. 050100150 Jan: 71.1 mm (2.8 in), 24 January 1938 Jan Feb: 36.3 mm (1.4 in), 21 February 1937 Feb Mar: 53.3 mm (2.1 in), 7 March 1973 Mar Apr: 71.4 mm (2.8 in), 28 April 1959 Apr May: 70.6 mm (2.8 in), 5 May 1965 May Jun: 78.7 mm (3.1 in), 21 June 1927 Jun Jul: 87.9 mm (3.5 in), 30 July 1970 Jul Aug: 103.1 mm (4.1 in), 17 August 1946 Aug Sep: 100.8 mm (4.0 in), 13 September 1978 Sep Oct: 142.2 mm (5.6 in), 10 October 1954 Oct Nov: 73.7 mm (2.9 in), 17 November 1928 Nov Dec: 61.0 mm (2.4 in), 15 December 1971 Dec
The wettest day on record for each calendar month at Rochelle 6 NW. The most was 142.2 mm (5.6 in) on 10 October 1954.
Record daily precipitation for each month at Rochelle 6 NW
MonthRecord daily precipitation (mm)Date
Jan71.1 mm (2.8 in)24 January 1938
Feb36.3 mm (1.4 in)21 February 1937
Mar53.3 mm (2.1 in)7 March 1973
Apr71.4 mm (2.8 in)28 April 1959
May70.6 mm (2.8 in)5 May 1965
Jun78.7 mm (3.1 in)21 June 1927
Jul87.9 mm (3.5 in)30 July 1970
Aug103.1 mm (4.1 in)17 August 1946
Sep100.8 mm (4.0 in)13 September 1978
Oct142.2 mm (5.6 in)10 October 1954
Nov73.7 mm (2.9 in)17 November 1928
Dec61.0 mm (2.4 in)15 December 1971

Period of Record Coverage

1940 to 1978
Days with data per year at Rochelle 6 NW 33 years of record at Rochelle 6 NW, 1940 to 1978. 14 years have data for under 90 percent of days and are left out of rankings: 1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947 and others. 1940: 98 of 366 days1941: 277 of 365 days1942: 259 of 365 days1943: 259 of 365 days1944: 265 of 366 days1945: 260 of 365 days1946: 275 of 365 days1947: 256 of 365 days1948: 101 of 366 days1955: 128 of 365 days1956: 363 of 366 days1957: 364 of 365 days1958: 365 of 365 days1959: 364 of 365 days1960: 365 of 366 days1961: 365 of 365 days1962: 350 of 365 days1963: 364 of 365 days1964: 366 of 366 days1965: 318 of 365 days1966: 329 of 365 days1967: 322 of 365 days1968: 229 of 366 days1969: 361 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 364 of 365 days1974: 361 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 272 of 365 days1940194519551960196519701975
33 years of record at Rochelle 6 NW, 1940 to 1978. 14 years have data for under 90 percent of days and are left out of rankings: 1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947 and others.
Days with data per year at Rochelle 6 NW
YearDays with dataShare of yearComplete
19409827%No
194127776%No
194225971%No
194325971%No
194426572%No
194526071%No
194627575%No
194725670%No
194810128%No
195512835%No
195636399%Yes
1957364100%Yes
1958365100%Yes
1959364100%Yes
1960365100%Yes
1961365100%Yes
196235096%Yes
1963364100%Yes
1964366100%Yes
196531887%No
196632990%Yes
196732288%No
196822963%No
196936199%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973364100%Yes
197436199%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
197827275%No

Latest Records

20
Latest records at Rochelle 6 NW
DateStationRecordValueBeat old record byOld record stoodSignificance
18 September 1978Rochelle 6 NW, USdaily rain48.5 mm (1.9 in)16.5 mm (0.6 in)3 years16 of 100 (Routine)
13 September 1978Rochelle 6 NW, USmonthly rain100.8 mm (4.0 in)6.8 mm (0.27 in)30 years28 of 100 (Routine)
9 August 1978Rochelle 6 NW, USdaily rain40.6 mm (1.6 in)11.4 mm (0.4 in)32 years22 of 100 (Routine)
25 June 1978Rochelle 6 NW, USdaily rain61.7 mm (2.4 in)15.5 mm (0.6 in)40 years27 of 100 (Routine)
13 May 1978Rochelle 6 NW, USdaily rain62.0 mm (2.4 in)5.1 mm (0.20 in)8 years11 of 100 (Routine)
10 April 1978Rochelle 6 NW, USdaily rain40.4 mm (1.6 in)28.5 mm (1.1 in)25 years40 of 100 (Notable)
6 April 1978Rochelle 6 NW, USdaily rain29.0 mm (1.1 in)2.3 mm (0.09 in)13 years11 of 100 (Routine)
23 February 1978Rochelle 6 NW, USdaily snowfall (Tie)2.5 cm (1.0 in)tie15 years2 of 100 (Routine)
1 January 1978Rochelle 6 NW, USdaily snowfall14.0 cm (5.5 in)7.6 cm (3.0 in)48 years34 of 100 (Routine)
1 December 1977Rochelle 6 NW, USdaily rain10.9 mm (0.4 in)4.0 mm (0.16 in)38 years20 of 100 (Routine)
1 December 1977Rochelle 6 NW, USdaily snowfall10.7 cm (4.2 in)1.8 cm (0.7 in)28 years17 of 100 (Routine)
25 November 1977Rochelle 6 NW, USdaily snowfall7.9 cm (3.1 in)3.8 cm (1.5 in)47 years30 of 100 (Routine)
1 November 1977Rochelle 6 NW, USdaily rain32.0 mm (1.3 in)17.0 mm (0.7 in)36 years34 of 100 (Routine)
25 October 1977Rochelle 6 NW, USdaily rain (Tie)27.2 mm (1.1 in)tie38 years4 of 100 (Routine)
8 August 1977Rochelle 6 NW, USdaily rain26.9 mm (1.1 in)0.2 mm (0.01 in)38 years16 of 100 (Routine)
4 August 1977Rochelle 6 NW, USdaily rain22.9 mm (0.9 in)4.4 mm (0.17 in)48 years20 of 100 (Routine)
16 July 1977Rochelle 6 NW, USdaily rain25.9 mm (1.0 in)5.1 mm (0.20 in)34 years18 of 100 (Routine)
20 March 1977Rochelle 6 NW, USdaily snowfall8.4 cm (3.3 in)0.8 cm (0.3 in)44 years19 of 100 (Routine)
28 January 1977Rochelle 6 NW, USdaily snowfall3.0 cm (1.2 in)0.5 cm (0.2 in)6 years7 of 100 (Routine)
30 May 1976Rochelle 6 NW, USdaily rain48.3 mm (1.9 in)28.5 mm (1.1 in)2 years33 of 100 (Routine)

Climate Trend

18 complete years, 1956 to 1977
Annual mean temperature at Rochelle 6 NW as warming stripes, 1956 to 1977 One stripe for each of 18 complete years at Rochelle 6 NW, 1956 to 1977. Blue stripes are years cooler than the station's own mean of 8.9 C (48.1 F); red stripes are warmer. The coolest year was 1972, at 8.1 C (46.6 F), and the warmest was 1973, at 10.2 C (50.3 F). The strongest colour marks a difference of 1.3 C (2.3 F). 1956: 10.2 C, +1.3 C from the station mean1957: 9.9 C, +1.0 C from the station mean1958: 8.8 C, -0.1 C from the station mean1959: 9.5 C, +0.5 C from the station mean1960: 8.3 C, -0.7 C from the station mean1961: 8.7 C, -0.2 C from the station mean1962: 8.2 C, -0.8 C from the station mean1963: 8.2 C, -0.7 C from the station mean1964: 8.9 C, -0.1 C from the station mean1969: 8.3 C, -0.6 C from the station mean1970: 8.7 C, -0.2 C from the station mean1971: 9.3 C, +0.3 C from the station mean1972: 8.1 C, -0.8 C from the station mean1973: 10.2 C, +1.3 C from the station mean1974: 9.1 C, +0.2 C from the station mean1975: 9.3 C, +0.4 C from the station mean1976: 8.2 C, -0.7 C from the station mean1977: 9.0 C, 0.0 C from the station mean19561958196019621964196619681970197219741976
One stripe for each of 18 complete years at Rochelle 6 NW, 1956 to 1977. Blue stripes are years cooler than the station's own mean of 8.9 C (48.1 F); red stripes are warmer. The coolest year was 1972, at 8.1 C (46.6 F), and the warmest was 1973, at 10.2 C (50.3 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Rochelle 6 NW as warming stripes, 1956 to 1977
YearAnnual mean temperatureDifference from the station mean
195610.2 C+1.25 C
19579.9 C+0.99 C
19588.8 C-0.10 C
19599.5 C+0.52 C
19608.3 C-0.67 C
19618.7 C-0.25 C
19628.2 C-0.78 C
19638.2 C-0.75 C
19648.9 C-0.08 C
19698.3 C-0.59 C
19708.7 C-0.19 C
19719.3 C+0.33 C
19728.1 C-0.80 C
197310.2 C+1.25 C
19749.1 C+0.20 C
19759.3 C+0.35 C
19768.2 C-0.73 C
19779.0 C+0.04 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

1923 to 1978
Yearly extremes at Rochelle 6 NW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.8 C (100.0 F)195635.0 C (95.0 F)33
Coldest night (TNn)-31.1 C (-24.0 F)1963-25.6 C (-14.1 F)33
Wettest day (Rx1day)142.2 mm (5.6 in)195458.2 mm (2.3 in)56
Wettest five days (Rx5day)159.5 mm (6.3 in)193690.8 mm (3.6 in)56
Longest dry spell (CDD)55 days195223 days56

Hottest day (TXx)

Hottest day (TXx) at Rochelle 6 NW by year The hottest day of the year at Rochelle 6 NW, 1923 to 1978. The record is 37.8 C (100.0 F) in 1956, marked on the chart; the median year is 35.0 C (95.0 F). 27.53032.53537.54019301940195019601970Record: 37.8 C (100.0 F) in 1956
The hottest day of the year at Rochelle 6 NW, 1923 to 1978. The record is 37.8 C (100.0 F) in 1956, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Rochelle 6 NW by year
YearHottest day (TXx)
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
194032.2 C (90.0 F)
194136.7 C (98.1 F)
194236.1 C (97.0 F)
194336.7 C (98.1 F)
194437.2 C (99.0 F)
194536.7 C (98.1 F)
194636.7 C (98.1 F)
194737.2 C (99.0 F)
194827.8 C (82.0 F)
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
195535.6 C (96.1 F)
195637.8 C (100.0 F)
195735.0 C (95.0 F)
195835.0 C (95.0 F)
195935.0 C (95.0 F)
196035.6 C (96.1 F)
196135.0 C (95.0 F)
196234.4 C (93.9 F)
196336.7 C (98.1 F)
196435.0 C (95.0 F)
196536.7 C (98.1 F)
196637.8 C (100.0 F)
196735.6 C (96.1 F)
196835.0 C (95.0 F)
196933.9 C (93.0 F)
197035.0 C (95.0 F)
197133.9 C (93.0 F)
197233.9 C (93.0 F)
197333.3 C (91.9 F)
197435.0 C (95.0 F)
197533.3 C (91.9 F)
197634.4 C (93.9 F)
197735.0 C (95.0 F)
197832.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at Rochelle 6 NW by year The coldest night of the year at Rochelle 6 NW, 1923 to 1978. The record is -31.1 C (-24.0 F) in 1963, marked on the chart; the median year is -25.6 C (-14.1 F). -35-30-25-20-1519301940195019601970Record: -31.1 C (-24.0 F) in 1963
The coldest night of the year at Rochelle 6 NW, 1923 to 1978. The record is -31.1 C (-24.0 F) in 1963, marked on the chart; the median year is -25.6 C (-14.1 F).
Coldest night (TNn) at Rochelle 6 NW by year
YearColdest night (TNn)
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940-23.3 C (-9.9 F)
1941-21.1 C (-6.0 F)
1942-27.8 C (-18.0 F)
1943-23.3 C (-9.9 F)
1944-19.4 C (-2.9 F)
1945-30.6 C (-23.1 F)
1946-20.0 C (-4.0 F)
1947-22.2 C (-8.0 F)
1948-25.0 C (-13.0 F)
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955-21.1 C (-6.0 F)
1956-21.1 C (-6.0 F)
1957-29.4 C (-20.9 F)
1958-28.9 C (-20.0 F)
1959-26.7 C (-16.1 F)
1960-30.6 C (-23.1 F)
1961-24.4 C (-11.9 F)
1962-28.9 C (-20.0 F)
1963-31.1 C (-24.0 F)
1964-23.9 C (-11.0 F)
1965-30.0 C (-22.0 F)
1966-30.0 C (-22.0 F)
1967-26.1 C (-15.0 F)
1968-23.9 C (-11.0 F)
1969-23.9 C (-11.0 F)
1970-30.0 C (-22.0 F)
1971-25.6 C (-14.1 F)
1972-28.9 C (-20.0 F)
1973-23.3 C (-9.9 F)
1974-30.6 C (-23.1 F)
1975-25.6 C (-14.1 F)
1976-28.9 C (-20.0 F)
1977-29.4 C (-20.9 F)
1978-25.0 C (-13.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Rochelle 6 NW by year The wettest day of the year at Rochelle 6 NW, 1923 to 1978. The record is 142.2 mm (5.6 in) in 1954, marked on the chart; the median year is 58.2 mm (2.3 in). 05010015019301940195019601970Record: 142.2 mm (5.6 in) in 1954
The wettest day of the year at Rochelle 6 NW, 1923 to 1978. The record is 142.2 mm (5.6 in) in 1954, marked on the chart; the median year is 58.2 mm (2.3 in).
Wettest day (Rx1day) at Rochelle 6 NW by year
YearWettest day (Rx1day)
192341.1 mm (1.6 in)
192496.5 mm (3.8 in)
192558.4 mm (2.3 in)
192680.3 mm (3.2 in)
192778.7 mm (3.1 in)
192873.7 mm (2.9 in)
192973.7 mm (2.9 in)
193083.3 mm (3.3 in)
193152.3 mm (2.1 in)
193250.0 mm (2.0 in)
193352.3 mm (2.1 in)
193439.4 mm (1.6 in)
193553.8 mm (2.1 in)
193657.9 mm (2.3 in)
193744.7 mm (1.8 in)
193871.1 mm (2.8 in)
193927.2 mm (1.1 in)
194038.1 mm (1.5 in)
194153.8 mm (2.1 in)
194240.6 mm (1.6 in)
194336.8 mm (1.4 in)
194448.0 mm (1.9 in)
194557.2 mm (2.3 in)
1946103.1 mm (4.1 in)
194794.0 mm (3.7 in)
194846.7 mm (1.8 in)
194950.5 mm (2.0 in)
195078.2 mm (3.1 in)
195185.6 mm (3.4 in)
195258.7 mm (2.3 in)
195350.8 mm (2.0 in)
1954142.2 mm (5.6 in)
195569.3 mm (2.7 in)
195643.9 mm (1.7 in)
195769.6 mm (2.7 in)
195875.9 mm (3.0 in)
195971.4 mm (2.8 in)
196060.2 mm (2.4 in)
196183.1 mm (3.3 in)
196243.4 mm (1.7 in)
196343.2 mm (1.7 in)
196438.1 mm (1.5 in)
196570.6 mm (2.8 in)
196664.8 mm (2.6 in)
196756.6 mm (2.2 in)
196854.1 mm (2.1 in)
196959.7 mm (2.4 in)
197087.9 mm (3.5 in)
197161.0 mm (2.4 in)
197263.0 mm (2.5 in)
197355.9 mm (2.2 in)
197465.3 mm (2.6 in)
197544.2 mm (1.7 in)
197649.8 mm (2.0 in)
197747.0 mm (1.9 in)
1978100.8 mm (4.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Rochelle 6 NW by year The wettest five days of the year at Rochelle 6 NW, 1923 to 1978. The record is 159.5 mm (6.3 in) in 1936, marked on the chart; the median year is 90.8 mm (3.6 in). 05010015020019301940195019601970Record: 159.5 mm (6.3 in) in 1936
The wettest five days of the year at Rochelle 6 NW, 1923 to 1978. The record is 159.5 mm (6.3 in) in 1936, marked on the chart; the median year is 90.8 mm (3.6 in).
Wettest five days (Rx5day) at Rochelle 6 NW by year
YearWettest five days (Rx5day)
192358.1 mm (2.3 in)
1924110.7 mm (4.4 in)
1925100.7 mm (4.0 in)
1926110.8 mm (4.4 in)
192780.7 mm (3.2 in)
1928106.5 mm (4.2 in)
192991.5 mm (3.6 in)
1930102.1 mm (4.0 in)
193170.6 mm (2.8 in)
193273.1 mm (2.9 in)
193393.7 mm (3.7 in)
193472.3 mm (2.8 in)
1935105.9 mm (4.2 in)
1936159.5 mm (6.3 in)
193754.1 mm (2.1 in)
1938110.5 mm (4.4 in)
193938.9 mm (1.5 in)
194088.8 mm (3.5 in)
194156.4 mm (2.2 in)
194292.5 mm (3.6 in)
194366.2 mm (2.6 in)
194481.0 mm (3.2 in)
194596.6 mm (3.8 in)
1946103.1 mm (4.1 in)
194796.0 mm (3.8 in)
194869.1 mm (2.7 in)
194977.9 mm (3.1 in)
195090.1 mm (3.5 in)
1951135.6 mm (5.3 in)
1952103.4 mm (4.1 in)
195363.0 mm (2.5 in)
1954154.4 mm (6.1 in)
195589.4 mm (3.5 in)
195684.6 mm (3.3 in)
195781.6 mm (3.2 in)
195890.1 mm (3.5 in)
195998.8 mm (3.9 in)
196094.0 mm (3.7 in)
1961152.5 mm (6.0 in)
196264.2 mm (2.5 in)
196391.5 mm (3.6 in)
196466.0 mm (2.6 in)
196599.6 mm (3.9 in)
196685.9 mm (3.4 in)
196768.5 mm (2.7 in)
196879.1 mm (3.1 in)
1969110.6 mm (4.4 in)
1970127.0 mm (5.0 in)
197162.3 mm (2.5 in)
1972100.4 mm (4.0 in)
197399.6 mm (3.9 in)
1974111.9 mm (4.4 in)
197554.3 mm (2.1 in)
197689.7 mm (3.5 in)
197776.7 mm (3.0 in)
1978120.3 mm (4.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Rochelle 6 NW by year The longest dry spell of the year at Rochelle 6 NW, 1923 to 1978. The record is 55 days in 1952, marked on the chart; the median year is 23 days. 020406019301940195019601970Record: 55 days in 1952
The longest dry spell of the year at Rochelle 6 NW, 1923 to 1978. The record is 55 days in 1952, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Rochelle 6 NW by year
YearLongest dry spell (CDD)
192312 days
192423 days
192525 days
192618 days
192719 days
192830 days
192913 days
193017 days
193127 days
193217 days
193338 days
193439 days
193517 days
193624 days
193726 days
193823 days
193930 days
194017 days
194128 days
194228 days
194325 days
194428 days
194523 days
194622 days
194741 days
194820 days
194922 days
195030 days
195120 days
195255 days
195323 days
195423 days
195516 days
195617 days
195728 days
195830 days
195928 days
196023 days
196123 days
196238 days
196315 days
196429 days
196516 days
196627 days
196719 days
196821 days
196918 days
197012 days
197124 days
197216 days
197315 days
197415 days
197512 days
197626 days
197718 days
197814 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.

Rainfall Return Levels

50 years, 1924 to 1977

A day with at least 58.2 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 129.3 mm (5.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Rochelle 6 NW: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years58.2 mm (2.3 in)
5 years76.2 mm (3.0 in)
10 years88.6 mm (3.5 in)
25 years104.6 mm (4.1 in)
50 years116.9 mm (4.6 in)
100 years129.3 mm (5.1 in)Longer than the 50 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 50 years of values from 1924 to 1977.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 142.2 mm (5.6 in) in 1954; 103.1 mm (4.1 in) in 1946; 96.5 mm (3.8 in) in 1924.

Download the Data

  • Data for Rochelle 6 NW standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Rochelle 6 NW 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 . Last revised (2025-12-31).