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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Groton Weather Records (CA003042960)

Record envelope, standing records and threshold days for Groton (CA003042960), Alberta, Canada, with 37 years of record.

Key Facts for Groton

  • Groton (CA003042960) is a weather station in Alberta, Canada at 49.20 latitude and -111.33 longitude, 914 m (2,999 ft) above sea level.
  • The station reports from 1927 to 1963, 37 years of record.
  • 0 records set at Groton still stand.
  • Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
  • Groton tied a daily record precipitation of 3.0 mm (0.12 in) on 16 July 1963.

About the Station

  • Location: Alberta, Canada, 49.20 latitude, -111.33 longitude.
  • Elevation: 914 m (2,999 ft).
  • Period of record: 1927 to 1963, 37 years.
  • Eligible elements: prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Groton, with 2026 drawn through them The band shows the record high and record low for each calendar day at Groton. 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 Groton. 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 Groton, 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 Groton by the year they were set 0 records at Groton still stand. 00000000000
0 records at Groton still stand.
Standing records at Groton by the year they were set
Year setStanding records

Wettest Day of Each Month

Aug: 82.6 mm (3.3 in)
Record daily precipitation for each month at Groton The wettest day on record for each calendar month at Groton. The most was 82.6 mm (3.3 in) on 14 August 1927. 0255075100 Jan: 15.2 mm (0.6 in), 26 January 1937 Jan Feb: 25.4 mm (1.0 in), 22 February 1956 Feb Mar: 20.3 mm (0.8 in), 14 March 1928 Mar Apr: 30.5 mm (1.2 in), 8 April 1933 Apr May: 41.1 mm (1.6 in), 9 May 1929 May Jun: 62.0 mm (2.4 in), 5 June 1951 Jun Jul: 43.2 mm (1.7 in), 30 July 1931 Jul Aug: 82.6 mm (3.3 in), 14 August 1927 Aug Sep: 67.8 mm (2.7 in), 10 September 1927 Sep Oct: 35.1 mm (1.4 in), 3 October 1946 Oct Nov: 22.9 mm (0.9 in), 13 November 1932 Nov Dec: 17.8 mm (0.7 in), 7 December 1936 Dec
The wettest day on record for each calendar month at Groton. The most was 82.6 mm (3.3 in) on 14 August 1927.
Record daily precipitation for each month at Groton
MonthRecord daily precipitation (mm)Date
Jan15.2 mm (0.6 in)26 January 1937
Feb25.4 mm (1.0 in)22 February 1956
Mar20.3 mm (0.8 in)14 March 1928
Apr30.5 mm (1.2 in)8 April 1933
May41.1 mm (1.6 in)9 May 1929
Jun62.0 mm (2.4 in)5 June 1951
Jul43.2 mm (1.7 in)30 July 1931
Aug82.6 mm (3.3 in)14 August 1927
Sep67.8 mm (2.7 in)10 September 1927
Oct35.1 mm (1.4 in)3 October 1946
Nov22.9 mm (0.9 in)13 November 1932
Dec17.8 mm (0.7 in)7 December 1936

Latest Records

20
Latest records at Groton
DateStationRecordValueBeat old record byOld record stoodSignificance
16 July 1963Groton, CAdaily rain (Tie)3.0 mm (0.12 in)tie10 years1 of 100 (Routine)
4 July 1963Groton, CAdaily rain11.7 mm (0.5 in)1.0 mm (0.04 in)8 years6 of 100 (Routine)
22 June 1963Groton, CAdaily rain25.4 mm (1.0 in)22.9 mm (0.9 in)16 years33 of 100 (Routine)
21 June 1963Groton, CAdaily rain25.4 mm (1.0 in)9.1 mm (0.36 in)29 years21 of 100 (Routine)
16 April 1963Groton, CAdaily rain7.6 mm (0.30 in)1.2 mm (0.05 in)30 years14 of 100 (Routine)
9 January 1963Groton, CAmonthly rain (Tie)15.2 mm (0.6 in)tie25 years5 of 100 (Routine)
9 January 1963Groton, CAmonthly snowfall (Tie)15.2 cm (6.0 in)tie25 years5 of 100 (Routine)
21 October 1962Groton, CAdaily rain12.7 mm (0.5 in)6.3 mm (0.25 in)25 years20 of 100 (Routine)
28 July 1962Groton, CAdaily rain3.8 mm (0.15 in)2.0 mm (0.08 in)12 years8 of 100 (Routine)
14 June 1962Groton, CAdaily rain5.1 mm (0.20 in)0.3 mm (0.01 in)15 years7 of 100 (Routine)
13 June 1962Groton, CAdaily rain17.8 mm (0.7 in)6.4 mm (0.25 in)4 years11 of 100 (Routine)
9 March 1962Groton, CAdaily snowfall7.6 cm (3.0 in)5.1 cm (2.0 in)25 years22 of 100 (Routine)
9 March 1962Groton, CAdaily rain7.6 mm (0.30 in)5.1 mm (0.20 in)25 years20 of 100 (Routine)
24 November 1961Groton, CAdaily rain7.6 mm (0.30 in)5.1 mm (0.20 in)18 years20 of 100 (Routine)
24 November 1961Groton, CAdaily snowfall7.6 cm (3.0 in)5.1 cm (2.0 in)18 years20 of 100 (Routine)
22 November 1961Groton, CAdaily rain7.6 mm (0.30 in)2.5 mm (0.10 in)15 years13 of 100 (Routine)
22 November 1961Groton, CAdaily snowfall7.6 cm (3.0 in)2.5 cm (1.0 in)15 years13 of 100 (Routine)
29 July 1961Groton, CAdaily rain12.7 mm (0.5 in)4.8 mm (0.19 in)28 years17 of 100 (Routine)
16 May 1961Groton, CAdaily rain9.1 mm (0.36 in)0.2 mm (0.01 in)12 years6 of 100 (Routine)
11 May 1961Groton, CAdaily rain (Tie)6.9 mm (0.27 in)tie19 years2 of 100 (Routine)

Extremes by Year

1927 to 1963
Yearly extremes at Groton: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)82.6 mm (3.3 in)192727.9 mm (1.1 in)35
Wettest five days (Rx5day)113.3 mm (4.5 in)192749.5 mm (1.9 in)35
Longest dry spell (CDD)78 days195339 days35

Wettest day (Rx1day)

Wettest day (Rx1day) at Groton by year The wettest day of the year at Groton, 1927 to 1963. The record is 82.6 mm (3.3 in) in 1927, marked on the chart; the median year is 27.9 mm (1.1 in). 0204060801001930194019501960Record: 82.6 mm (3.3 in) in 1927
The wettest day of the year at Groton, 1927 to 1963. The record is 82.6 mm (3.3 in) in 1927, marked on the chart; the median year is 27.9 mm (1.1 in).
Wettest day (Rx1day) at Groton by year
YearWettest day (Rx1day)
192782.6 mm (3.3 in)
192834.0 mm (1.3 in)
192951.1 mm (2.0 in)
193143.2 mm (1.7 in)
193226.4 mm (1.0 in)
193330.5 mm (1.2 in)
193439.6 mm (1.6 in)
193515.2 mm (0.6 in)
193620.3 mm (0.8 in)
193744.2 mm (1.7 in)
193829.7 mm (1.2 in)
193925.9 mm (1.0 in)
194023.9 mm (0.9 in)
194119.8 mm (0.8 in)
194222.9 mm (0.9 in)
194324.1 mm (0.9 in)
194419.1 mm (0.8 in)
194512.7 mm (0.5 in)
194635.1 mm (1.4 in)
194732.3 mm (1.3 in)
194823.1 mm (0.9 in)
194931.8 mm (1.3 in)
195030.7 mm (1.2 in)
195162.0 mm (2.4 in)
195222.1 mm (0.9 in)
195329.5 mm (1.2 in)
195449.8 mm (2.0 in)
195534.8 mm (1.4 in)
195651.1 mm (2.0 in)
195715.7 mm (0.6 in)
195927.7 mm (1.1 in)
196021.6 mm (0.9 in)
196112.7 mm (0.5 in)
196227.9 mm (1.1 in)
196325.4 mm (1.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Groton by year The wettest five days of the year at Groton, 1927 to 1963. The record is 113.3 mm (4.5 in) in 1927, marked on the chart; the median year is 49.5 mm (1.9 in). 02550751001251930194019501960Record: 113.3 mm (4.5 in) in 1927
The wettest five days of the year at Groton, 1927 to 1963. The record is 113.3 mm (4.5 in) in 1927, marked on the chart; the median year is 49.5 mm (1.9 in).
Wettest five days (Rx5day) at Groton by year
YearWettest five days (Rx5day)
1927113.3 mm (4.5 in)
192867.8 mm (2.7 in)
192951.1 mm (2.0 in)
193168.9 mm (2.7 in)
193250.2 mm (2.0 in)
193358.4 mm (2.3 in)
193465.4 mm (2.6 in)
193533.0 mm (1.3 in)
193648.4 mm (1.9 in)
193765.0 mm (2.6 in)
193849.5 mm (1.9 in)
193955.4 mm (2.2 in)
194053.4 mm (2.1 in)
194145.7 mm (1.8 in)
194236.8 mm (1.4 in)
194327.1 mm (1.1 in)
194428.6 mm (1.1 in)
194530.3 mm (1.2 in)
194641.0 mm (1.6 in)
194749.5 mm (1.9 in)
194842.1 mm (1.7 in)
194943.0 mm (1.7 in)
195046.4 mm (1.8 in)
195179.1 mm (3.1 in)
195255.0 mm (2.2 in)
195346.5 mm (1.8 in)
195466.3 mm (2.6 in)
195570.6 mm (2.8 in)
195676.0 mm (3.0 in)
195728.1 mm (1.1 in)
195927.7 mm (1.1 in)
196033.7 mm (1.3 in)
196118.3 mm (0.7 in)
196250.8 mm (2.0 in)
196350.8 mm (2.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Groton by year The longest dry spell of the year at Groton, 1927 to 1963. The record is 78 days in 1953, marked on the chart; the median year is 39 days. 0204060801930194019501960Record: 78 days in 1953
The longest dry spell of the year at Groton, 1927 to 1963. The record is 78 days in 1953, marked on the chart; the median year is 39 days.
Longest dry spell (CDD) at Groton by year
YearLongest dry spell (CDD)
192719 days
192845 days
192944 days
193147 days
193226 days
193340 days
193433 days
193540 days
193636 days
193739 days
193835 days
193942 days
194030 days
194157 days
194224 days
194337 days
194450 days
194533 days
194642 days
194724 days
194842 days
194956 days
195038 days
195132 days
195248 days
195378 days
195455 days
195556 days
195638 days
195716 days
195943 days
196040 days
196132 days
196235 days
196317 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 Groton standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Groton 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).