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Built 2026-10-16 (16 October 2026)

Mt Union I N Weather Records (USC00366067)

Record envelope, standing records and threshold days for Mt Union I N (USC00366067), Pennsylvania, United States, with 31 years of record.

Key Facts for Mt Union I N

  • Mt Union I N (USC00366067) is a weather station in Pennsylvania, United States at 40.40 latitude and -77.88 longitude, 250 m (820 ft) above sea level.
  • The station reports from 1921 to 1951, 31 years of record.
  • 236 records set at Mt Union I N still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Pennsylvania, United States, 40.40 latitude, -77.88 longitude.
  • Elevation: 250 m (820 ft).
  • Period of record: 1921 to 1951, 31 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Mt Union I N, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mt Union I N. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Mt Union I N. 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 Mt Union I N, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan15.6 C (60.1 F)-8.9 C (16.0 F)n/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sep32.2 C (90.0 F)12.2 C (54.0 F)n/an/a
Oct23.3 C (73.9 F)2.2 C (36.0 F)n/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

236 standing records
Standing records at Mt Union I N by the year they were set 236 records at Mt Union I N still stand. 1921 holds the most, with 206. 01002003001921: 2061922: 3019211922
236 records at Mt Union I N still stand. 1921 holds the most, with 206.
Standing records at Mt Union I N by the year they were set
Year setStanding records
1921206
192230

Wettest Day of Each Month

Jan: 74.4 mm (2.9 in)
Record daily precipitation for each month at Mt Union I N The wettest day on record for each calendar month at Mt Union I N. The most was 74.4 mm (2.9 in) on 31 January 1949. 020406080 Jan: 74.4 mm (2.9 in), 31 January 1949 Jan Feb: 40.9 mm (1.6 in), 20 February 1924 Feb Mar: 27.9 mm (1.1 in), 12 March 1924 Mar Apr: 49.5 mm (1.9 in), 7 April 1924 Apr May: 47.5 mm (1.9 in), 12 May 1924 May Jun: 66.0 mm (2.6 in), 28 June 1922 Jun Jul: 57.4 mm (2.3 in), 10 July 1951 Jul Aug: 56.6 mm (2.2 in), 19 August 1950 Aug Sep: 64.5 mm (2.5 in), 30 September 1924 Sep Oct: 55.9 mm (2.2 in), 8 October 1948 Oct Nov: 33.0 mm (1.3 in), 13 November 1925 Nov Dec: 50.5 mm (2.0 in), 19 December 1948 Dec
The wettest day on record for each calendar month at Mt Union I N. The most was 74.4 mm (2.9 in) on 31 January 1949.
Record daily precipitation for each month at Mt Union I N
MonthRecord daily precipitation (mm)Date
Jan74.4 mm (2.9 in)31 January 1949
Feb40.9 mm (1.6 in)20 February 1924
Mar27.9 mm (1.1 in)12 March 1924
Apr49.5 mm (1.9 in)7 April 1924
May47.5 mm (1.9 in)12 May 1924
Jun66.0 mm (2.6 in)28 June 1922
Jul57.4 mm (2.3 in)10 July 1951
Aug56.6 mm (2.2 in)19 August 1950
Sep64.5 mm (2.5 in)30 September 1924
Oct55.9 mm (2.2 in)8 October 1948
Nov33.0 mm (1.3 in)13 November 1925
Dec50.5 mm (2.0 in)19 December 1948

Period of Record Coverage

1921 to 1922
Days with data per year at Mt Union I N 2 years of record at Mt Union I N, 1921 to 1922. 2 years have data for under 90 percent of days and are left out of rankings: 1921, 1922. 1921: 49 of 365 days1922: 7 of 365 days
2 years of record at Mt Union I N, 1921 to 1922. 2 years have data for under 90 percent of days and are left out of rankings: 1921, 1922.
Days with data per year at Mt Union I N
YearDays with dataShare of yearComplete
19214913%No
192272%No

Latest Records

0

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

Extremes by Year

1921 to 1951
Yearly extremes at Mt Union I N: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)32.2 C (90.0 F)192123.9 C (75.0 F)2
Coldest night (TNn)-8.9 C (16.0 F)1922-3.3 C (26.0 F)2
Wettest day (Rx1day)74.4 mm (2.9 in)194956.3 mm (2.2 in)10
Wettest five days (Rx5day)115.0 mm (4.5 in)192275.2 mm (3.0 in)10
Longest dry spell (CDD)27 days192421 days10

Hottest day (TXx)

Hottest day (TXx) at Mt Union I N by year The hottest day of the year at Mt Union I N, 1921 to 1951. The record is 32.2 C (90.0 F) in 1921, marked on the chart; the median year is 23.9 C (75.0 F). 1520253035192519301935194019451950Record: 32.2 C (90.0 F) in 1921
The hottest day of the year at Mt Union I N, 1921 to 1951. The record is 32.2 C (90.0 F) in 1921, marked on the chart; the median year is 23.9 C (75.0 F).
Hottest day (TXx) at Mt Union I N by year
YearHottest day (TXx)
192132.2 C (90.0 F)
192215.6 C (60.1 F)
1923n/a
1924n/a
1925n/a
1926n/a
1948n/a
1949n/a
1950n/a
1951n/a

Coldest night (TNn)

Coldest night (TNn) at Mt Union I N by year The coldest night of the year at Mt Union I N, 1921 to 1951. The record is -8.9 C (16.0 F) in 1922, marked on the chart; the median year is -3.3 C (26.0 F). -10-505192519301935194019451950Record: -8.9 C (16.0 F) in 1922
The coldest night of the year at Mt Union I N, 1921 to 1951. The record is -8.9 C (16.0 F) in 1922, marked on the chart; the median year is -3.3 C (26.0 F).
Coldest night (TNn) at Mt Union I N by year
YearColdest night (TNn)
19212.2 C (36.0 F)
1922-8.9 C (16.0 F)
1923n/a
1924n/a
1925n/a
1926n/a
1948n/a
1949n/a
1950n/a
1951n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Mt Union I N by year The wettest day of the year at Mt Union I N, 1921 to 1951. The record is 74.4 mm (2.9 in) in 1949, marked on the chart; the median year is 56.3 mm (2.2 in). 20406080192519301935194019451950Record: 74.4 mm (2.9 in) in 1949
The wettest day of the year at Mt Union I N, 1921 to 1951. The record is 74.4 mm (2.9 in) in 1949, marked on the chart; the median year is 56.3 mm (2.2 in).
Wettest day (Rx1day) at Mt Union I N by year
YearWettest day (Rx1day)
192140.1 mm (1.6 in)
192266.0 mm (2.6 in)
192346.0 mm (1.8 in)
192464.5 mm (2.5 in)
192533.8 mm (1.3 in)
192645.2 mm (1.8 in)
194855.9 mm (2.2 in)
194974.4 mm (2.9 in)
195056.6 mm (2.2 in)
195157.4 mm (2.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mt Union I N by year The wettest five days of the year at Mt Union I N, 1921 to 1951. The record is 115.0 mm (4.5 in) in 1922, marked on the chart; the median year is 75.2 mm (3.0 in). 406080100120192519301935194019451950Record: 115.0 mm (4.5 in) in 1922
The wettest five days of the year at Mt Union I N, 1921 to 1951. The record is 115.0 mm (4.5 in) in 1922, marked on the chart; the median year is 75.2 mm (3.0 in).
Wettest five days (Rx5day) at Mt Union I N by year
YearWettest five days (Rx5day)
192177.9 mm (3.1 in)
1922115.0 mm (4.5 in)
192355.7 mm (2.2 in)
192490.7 mm (3.6 in)
192549.5 mm (1.9 in)
192665.6 mm (2.6 in)
194871.1 mm (2.8 in)
194974.4 mm (2.9 in)
195076.0 mm (3.0 in)
195191.8 mm (3.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mt Union I N by year The longest dry spell of the year at Mt Union I N, 1921 to 1951. The record is 27 days in 1924, marked on the chart; the median year is 21 days. 15202530192519301935194019451950Record: 27 days in 1924
The longest dry spell of the year at Mt Union I N, 1921 to 1951. The record is 27 days in 1924, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Mt Union I N by year
YearLongest dry spell (CDD)
192117 days
192225 days
192321 days
192427 days
192516 days
192616 days
194820 days
194924 days
195017 days
195121 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 Mt Union I N standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mt Union I N 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).