Flattop Lo Weather Records (CA003062630)

Record envelope, standing records and threshold days for Flattop Lo (CA003062630), Alberta, Canada, with 53 years of record.

Key Facts for Flattop Lo

Flattop Lo (CA003062630) is a weather station in Alberta, Canada at 55.15 latitude and -114.80 longitude, 1,030 m (3,379 ft) above sea level.
The station reports from 1959 to 2011, 53 years of record.
864 records set at Flattop Lo still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Alberta, Canada, 55.15 latitude, -114.80 longitude.
Elevation: 1,030 m (3,379 ft).
Period of record: 1959 to 2011, 53 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Flattop Lo. 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 Flattop Lo, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	27.0 C (80.6 F)	-18.3 C (-0.9 F)	n/a	n/a
May	27.0 C (80.6 F)	-12.0 C (10.4 F)	n/a	n/a
Jun	29.4 C (84.9 F)	-2.2 C (28.0 F)	n/a	n/a
Jul	28.3 C (82.9 F)	2.8 C (37.0 F)	n/a	n/a
Aug	29.4 C (84.9 F)	-2.0 C (28.4 F)	n/a	n/a
Sep	29.0 C (84.2 F)	-10.6 C (12.9 F)	n/a	n/a
Oct	26.1 C (79.0 F)	-12.8 C (9.0 F)	n/a	n/a
Nov	10.0 C (50.0 F)	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

864 standing records

864 records at Flattop Lo still stand. 1966 holds the most, with 73.

Standing records at Flattop Lo by the year they were set
Year set	Standing records
1963	41
1964	61
1965	53
1966	73
1967	50
1968	44
1969	27
1970	22
1971	32
1972	39
1973	24
1974	38
1975	29
1976	22
1977	53
1978	35
1979	44
1980	65
1981	51
1982	36
1983	25

Wettest Day of Each Month

Jun: 84.1 mm (3.3 in)

The wettest day on record for each calendar month at Flattop Lo. The most was 84.1 mm (3.3 in) on 30 June 1979.

Record daily precipitation for each month at Flattop Lo
Month	Record daily precipitation (mm)	Date
Apr	25.4 mm (1.0 in)	30 April 1974
May	33.0 mm (1.3 in)	20 May 1973
Jun	84.1 mm (3.3 in)	30 June 1979
Jul	59.7 mm (2.4 in)	23 July 1961
Aug	43.4 mm (1.7 in)	6 August 1973
Sep	47.3 mm (1.9 in)	16 September 1978
Oct	26.6 mm (1.0 in)	8 October 1977
Nov	5.1 mm (0.20 in)	1 November 1963

Period of Record Coverage

1963 to 1983

21 years of record at Flattop Lo, 1963 to 1983. 21 years have data for under 90 percent of days and are left out of rankings: 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970 and others.

Days with data per year at Flattop Lo
Year	Days with data	Share of year	Complete
1963	159	44%	No
1964	212	58%	No
1965	199	55%	No
1966	201	55%	No
1967	177	48%	No
1968	163	45%	No
1969	158	43%	No
1970	156	43%	No
1971	171	47%	No
1972	180	49%	No
1973	178	49%	No
1974	197	54%	No
1975	189	52%	No
1976	184	50%	No
1977	197	54%	No
1978	198	54%	No
1979	194	53%	No
1980	184	50%	No
1981	176	48%	No
1982	161	44%	No
1983	173	47%	No

Latest Records

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

Extremes by Year

1959 to 1983

Yearly extremes at Flattop Lo: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	29.4 C (84.9 F)	1970	27.2 C (81.0 F)	21
Coldest night (TNn)	-18.3 C (-0.9 F)	1965	-6.1 C (21.0 F)	21
Wettest day (Rx1day)	84.1 mm (3.3 in)	1979	43.4 mm (1.7 in)	25
Wettest five days (Rx5day)	171.1 mm (6.7 in)	1961	82.2 mm (3.2 in)	25
Longest dry spell (CDD)	23 days	1965	16 days	25

Hottest day (TXx)

The hottest day of the year at Flattop Lo, 1959 to 1983. The record is 29.4 C (84.9 F) in 1970, marked on the chart; the median year is 27.2 C (81.0 F).

Hottest day (TXx) at Flattop Lo by year
Year	Hottest day (TXx)
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	27.8 C (82.0 F)
1964	27.8 C (82.0 F)
1965	28.3 C (82.9 F)
1966	26.1 C (79.0 F)
1967	27.8 C (82.0 F)
1968	27.8 C (82.0 F)
1969	27.8 C (82.0 F)
1970	29.4 C (84.9 F)
1971	26.7 C (80.1 F)
1972	26.1 C (79.0 F)
1973	26.1 C (79.0 F)
1974	25.0 C (77.0 F)
1975	27.2 C (81.0 F)
1976	23.0 C (73.4 F)
1977	27.0 C (80.6 F)
1978	27.0 C (80.6 F)
1979	28.0 C (82.4 F)
1980	26.0 C (78.8 F)
1981	29.0 C (84.2 F)
1982	28.0 C (82.4 F)
1983	27.0 C (80.6 F)

Coldest night (TNn)

The coldest night of the year at Flattop Lo, 1959 to 1983. The record is -18.3 C (-0.9 F) in 1965, marked on the chart; the median year is -6.1 C (21.0 F).

Coldest night (TNn) at Flattop Lo by year
Year	Coldest night (TNn)
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	-1.1 C (30.0 F)
1964	-13.3 C (8.1 F)
1965	-18.3 C (-0.9 F)
1966	-17.8 C (0.0 F)
1967	-6.1 C (21.0 F)
1968	-4.4 C (24.1 F)
1969	-4.4 C (24.1 F)
1970	-6.1 C (21.0 F)
1971	-6.1 C (21.0 F)
1972	-12.8 C (9.0 F)
1973	-4.4 C (24.1 F)
1974	-10.6 C (12.9 F)
1975	-3.3 C (26.1 F)
1976	-6.0 C (21.2 F)
1977	-7.0 C (19.4 F)
1978	-11.0 C (12.2 F)
1979	-12.0 C (10.4 F)
1980	-2.0 C (28.4 F)
1981	-18.0 C (-0.4 F)
1982	-6.0 C (21.2 F)
1983	-7.0 C (19.4 F)

Wettest day (Rx1day)

The wettest day of the year at Flattop Lo, 1959 to 1983. The record is 84.1 mm (3.3 in) in 1979, marked on the chart; the median year is 43.4 mm (1.7 in).

Wettest day (Rx1day) at Flattop Lo by year
Year	Wettest day (Rx1day)
1959	20.3 mm (0.8 in)
1960	30.0 mm (1.2 in)
1961	75.9 mm (3.0 in)
1962	17.5 mm (0.7 in)
1963	51.6 mm (2.0 in)
1964	58.2 mm (2.3 in)
1965	49.3 mm (1.9 in)
1966	32.0 mm (1.3 in)
1967	31.5 mm (1.2 in)
1968	56.4 mm (2.2 in)
1969	39.6 mm (1.6 in)
1970	48.3 mm (1.9 in)
1971	38.9 mm (1.5 in)
1972	58.4 mm (2.3 in)
1973	43.4 mm (1.7 in)
1974	39.6 mm (1.6 in)
1975	48.5 mm (1.9 in)
1976	39.2 mm (1.5 in)
1977	49.7 mm (2.0 in)
1978	47.3 mm (1.9 in)
1979	84.1 mm (3.3 in)
1980	38.2 mm (1.5 in)
1981	33.2 mm (1.3 in)
1982	39.6 mm (1.6 in)
1983	64.6 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Flattop Lo, 1959 to 1983. The record is 171.1 mm (6.7 in) in 1961, marked on the chart; the median year is 82.2 mm (3.2 in).

Wettest five days (Rx5day) at Flattop Lo by year
Year	Wettest five days (Rx5day)
1959	51.3 mm (2.0 in)
1960	73.7 mm (2.9 in)
1961	171.1 mm (6.7 in)
1962	39.6 mm (1.6 in)
1963	85.9 mm (3.4 in)
1964	90.4 mm (3.6 in)
1965	84.9 mm (3.3 in)
1966	52.8 mm (2.1 in)
1967	44.3 mm (1.7 in)
1968	120.7 mm (4.8 in)
1969	93.7 mm (3.7 in)
1970	109.1 mm (4.3 in)
1971	102.3 mm (4.0 in)
1972	73.9 mm (2.9 in)
1973	72.7 mm (2.9 in)
1974	81.7 mm (3.2 in)
1975	110.7 mm (4.4 in)
1976	65.1 mm (2.6 in)
1977	79.5 mm (3.1 in)
1978	82.2 mm (3.2 in)
1979	106.8 mm (4.2 in)
1980	103.8 mm (4.1 in)
1981	71.5 mm (2.8 in)
1982	60.6 mm (2.4 in)
1983	103.6 mm (4.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Flattop Lo, 1959 to 1983. The record is 23 days in 1965, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at Flattop Lo by year
Year	Longest dry spell (CDD)
1959	13 days
1960	16 days
1961	13 days
1962	13 days
1963	20 days
1964	11 days
1965	23 days
1966	19 days
1967	12 days
1968	18 days
1969	14 days
1970	21 days
1971	18 days
1972	11 days
1973	9 days
1974	16 days
1975	10 days
1976	22 days
1977	23 days
1978	12 days
1979	19 days
1980	17 days
1981	19 days
1982	16 days
1983	13 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 Flattop Lo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Flattop Lo 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

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