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Built 2026-10-16 (16 October 2026)

Mahwah Weather Records (USC00285104)

Record envelope, standing records and threshold days for Mahwah (USC00285104), New Jersey, United States, with 33 years of record.

Key Facts for Mahwah

  • Mahwah (USC00285104) is a weather station in New Jersey, United States at 41.10 latitude and -74.17 longitude, 76 m (249 ft) above sea level.
  • The station reports from 1956 to 1988, 33 years of record.
  • 0 records set at Mahwah still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Mahwah tied a daily record snowfall of 5.1 cm (2.0 in) on 28 February 1988.

About the Station

  • Location: New Jersey, United States, 41.10 latitude, -74.17 longitude.
  • Elevation: 76 m (249 ft).
  • Period of record: 1956 to 1988, 33 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Mahwah, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mahwah. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Mahwah. 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 Mahwah, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at Mahwah by the year they were set 0 records at Mahwah still stand. 00000000000
0 records at Mahwah still stand.
Standing records at Mahwah by the year they were set
Year setStanding records

Wettest Day of Each Month

Aug: 205.7 mm (8.1 in)
Record daily precipitation for each month at Mahwah The wettest day on record for each calendar month at Mahwah. The most was 205.7 mm (8.1 in) on 28 August 1971. 0100200300 Jan: 63.5 mm (2.5 in), 26 January 1986 Jan Feb: 75.9 mm (3.0 in), 25 February 1977 Feb Mar: 104.9 mm (4.1 in), 22 March 1980 Mar Apr: 94.0 mm (3.7 in), 10 April 1980 Apr May: 102.1 mm (4.0 in), 30 May 1968 May Jun: 127.3 mm (5.0 in), 30 June 1973 Jun Jul: 77.0 mm (3.0 in), 1 July 1976 Jul Aug: 205.7 mm (8.1 in), 28 August 1971 Aug Sep: 137.9 mm (5.4 in), 12 September 1971 Sep Oct: 78.7 mm (3.1 in), 28 October 1987 Oct Nov: 96.5 mm (3.8 in), 9 November 1972 Nov Dec: 89.4 mm (3.5 in), 13 December 1983 Dec
The wettest day on record for each calendar month at Mahwah. The most was 205.7 mm (8.1 in) on 28 August 1971.
Record daily precipitation for each month at Mahwah
MonthRecord daily precipitation (mm)Date
Jan63.5 mm (2.5 in)26 January 1986
Feb75.9 mm (3.0 in)25 February 1977
Mar104.9 mm (4.1 in)22 March 1980
Apr94.0 mm (3.7 in)10 April 1980
May102.1 mm (4.0 in)30 May 1968
Jun127.3 mm (5.0 in)30 June 1973
Jul77.0 mm (3.0 in)1 July 1976
Aug205.7 mm (8.1 in)28 August 1971
Sep137.9 mm (5.4 in)12 September 1971
Oct78.7 mm (3.1 in)28 October 1987
Nov96.5 mm (3.8 in)9 November 1972
Dec89.4 mm (3.5 in)13 December 1983

Latest Records

20
Latest records at Mahwah
DateStationRecordValueBeat old record byOld record stoodSignificance
28 February 1988Mahwah, USdaily snowfall (Tie)5.1 cm (2.0 in)tie20 years2 of 100 (Routine)
13 February 1988Mahwah, USdaily snowfall5.1 cm (2.0 in)2.6 cm (1.0 in)24 years13 of 100 (Routine)
12 February 1988Mahwah, USdaily rain34.3 mm (1.4 in)6.4 mm (0.25 in)6 years10 of 100 (Routine)
26 January 1988Mahwah, USdaily snow depth15.2 cm (6.0 in)12.7 cm (5.0 in)30 years38 of 100 (Notable)
28 December 1987Mahwah, USdaily snow depth7.6 cm (3.0 in)5.1 cm (2.0 in)2 years13 of 100 (Routine)
16 December 1987Mahwah, USdaily rain19.3 mm (0.8 in)4.1 mm (0.16 in)14 years10 of 100 (Routine)
30 November 1987Mahwah, USdaily rain41.4 mm (1.6 in)7.4 mm (0.29 in)24 years15 of 100 (Routine)
12 November 1987Mahwah, USmonthly snow depth (Tie)7.6 cm (3.0 in)tie24 years5 of 100 (Routine)
11 November 1987Mahwah, USdaily snow depth2.5 cm (1.0 in)2.5 cm (1.0 in)30 years14 of 100 (Routine)
11 November 1987Mahwah, USdaily rain26.9 mm (1.1 in)7.6 mm (0.30 in)12 years11 of 100 (Routine)
28 October 1987Mahwah, USmonthly rain78.7 mm (3.1 in)9.1 mm (0.36 in)13 years23 of 100 (Routine)
4 October 1987Mahwah, USdaily rain36.1 mm (1.4 in)14.0 mm (0.6 in)8 years14 of 100 (Routine)
14 September 1987Mahwah, USdaily rain34.8 mm (1.4 in)15.2 mm (0.6 in)16 years15 of 100 (Routine)
9 September 1987Mahwah, USdaily rain31.2 mm (1.2 in)8.3 mm (0.33 in)5 years8 of 100 (Routine)
8 September 1987Mahwah, USdaily rain14.5 mm (0.6 in)11.7 mm (0.5 in)28 years17 of 100 (Routine)
29 August 1987Mahwah, USdaily rain24.1 mm (0.9 in)4.5 mm (0.18 in)4 years6 of 100 (Routine)
27 August 1987Mahwah, USdaily rain25.4 mm (1.0 in)17.8 mm (0.7 in)21 years19 of 100 (Routine)
6 August 1987Mahwah, USdaily rain81.3 mm (3.2 in)67.3 mm (2.6 in)6 years43 of 100 (Notable)
8 July 1987Mahwah, USdaily rain23.1 mm (0.9 in)5.8 mm (0.23 in)10 years10 of 100 (Routine)
3 July 1987Mahwah, USdaily rain23.6 mm (0.9 in)7.3 mm (0.29 in)0 years8 of 100 (Routine)

Extremes by Year

1956 to 1988
Yearly extremes at Mahwah: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)205.7 mm (8.1 in)197178.7 mm (3.1 in)33
Wettest five days (Rx5day)209.5 mm (8.2 in)1971117.5 mm (4.6 in)33
Longest dry spell (CDD)37 days196417 days33

Wettest day (Rx1day)

Wettest day (Rx1day) at Mahwah by year The wettest day of the year at Mahwah, 1956 to 1988. The record is 205.7 mm (8.1 in) in 1971, marked on the chart; the median year is 78.7 mm (3.1 in). 050100150200250196019701980Record: 205.7 mm (8.1 in) in 1971
The wettest day of the year at Mahwah, 1956 to 1988. The record is 205.7 mm (8.1 in) in 1971, marked on the chart; the median year is 78.7 mm (3.1 in).
Wettest day (Rx1day) at Mahwah by year
YearWettest day (Rx1day)
195658.9 mm (2.3 in)
195778.7 mm (3.1 in)
195870.4 mm (2.8 in)
195961.7 mm (2.4 in)
196061.0 mm (2.4 in)
196140.1 mm (1.6 in)
196243.4 mm (1.7 in)
196353.8 mm (2.1 in)
196446.7 mm (1.8 in)
1965100.1 mm (3.9 in)
1966112.8 mm (4.4 in)
196755.4 mm (2.2 in)
1968102.1 mm (4.0 in)
196985.9 mm (3.4 in)
197040.6 mm (1.6 in)
1971205.7 mm (8.1 in)
197296.5 mm (3.8 in)
1973127.3 mm (5.0 in)
197460.2 mm (2.4 in)
197564.8 mm (2.6 in)
197677.0 mm (3.0 in)
197793.0 mm (3.7 in)
197878.7 mm (3.1 in)
197982.0 mm (3.2 in)
1980104.9 mm (4.1 in)
198185.9 mm (3.4 in)
198255.1 mm (2.2 in)
198389.4 mm (3.5 in)
1984100.8 mm (4.0 in)
198578.7 mm (3.1 in)
198671.9 mm (2.8 in)
198781.3 mm (3.2 in)
198834.3 mm (1.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mahwah by year The wettest five days of the year at Mahwah, 1956 to 1988. The record is 209.5 mm (8.2 in) in 1971, marked on the chart; the median year is 117.5 mm (4.6 in). 050100150200250196019701980Record: 209.5 mm (8.2 in) in 1971
The wettest five days of the year at Mahwah, 1956 to 1988. The record is 209.5 mm (8.2 in) in 1971, marked on the chart; the median year is 117.5 mm (4.6 in).
Wettest five days (Rx5day) at Mahwah by year
YearWettest five days (Rx5day)
1956110.4 mm (4.3 in)
1957101.8 mm (4.0 in)
1958107.5 mm (4.2 in)
195989.4 mm (3.5 in)
1960141.3 mm (5.6 in)
196165.5 mm (2.6 in)
196280.2 mm (3.2 in)
1963117.5 mm (4.6 in)
196459.4 mm (2.3 in)
1965100.1 mm (3.9 in)
1966120.9 mm (4.8 in)
196787.4 mm (3.4 in)
1968164.6 mm (6.5 in)
1969111.1 mm (4.4 in)
1970106.7 mm (4.2 in)
1971209.5 mm (8.2 in)
1972141.5 mm (5.6 in)
1973148.4 mm (5.8 in)
197498.8 mm (3.9 in)
1975174.2 mm (6.9 in)
1976138.7 mm (5.5 in)
1977155.8 mm (6.1 in)
1978201.9 mm (7.9 in)
1979121.4 mm (4.8 in)
1980129.2 mm (5.1 in)
1981124.0 mm (4.9 in)
198287.1 mm (3.4 in)
1983138.6 mm (5.5 in)
1984172.0 mm (6.8 in)
1985116.9 mm (4.6 in)
198694.2 mm (3.7 in)
1987118.9 mm (4.7 in)
198847.5 mm (1.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mahwah by year The longest dry spell of the year at Mahwah, 1956 to 1988. The record is 37 days in 1964, marked on the chart; the median year is 17 days. 010203040196019701980Record: 37 days in 1964
The longest dry spell of the year at Mahwah, 1956 to 1988. The record is 37 days in 1964, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Mahwah by year
YearLongest dry spell (CDD)
19568 days
195715 days
195820 days
195917 days
196012 days
196118 days
196215 days
196327 days
196437 days
196519 days
196616 days
196716 days
196826 days
196917 days
197016 days
197113 days
197211 days
197320 days
197415 days
197513 days
197619 days
197719 days
197819 days
197915 days
198027 days
198125 days
198215 days
198312 days
198417 days
198519 days
198616 days
198716 days
198819 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

31 years, 1957 to 1987

A day with at least 75.2 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 181.5 mm (7.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Mahwah: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years75.2 mm (3.0 in)
5 years101.8 mm (4.0 in)
10 years120.1 mm (4.7 in)
25 years144.2 mm (5.7 in)
50 years162.6 mm (6.4 in)Longer than the 31 years of record
100 years181.5 mm (7.1 in)Longer than the 31 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, 31 years of values from 1957 to 1987.

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: 205.7 mm (8.1 in) in 1971; 127.3 mm (5.0 in) in 1973; 112.8 mm (4.4 in) in 1966.

Download the Data

  • Data for Mahwah standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mahwah 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).