Webster Groves Weather Records (USC00238791)

Record envelope, standing records and threshold days for Webster Groves (USC00238791), Missouri, United States, with 30 years of record.

Key Facts for Webster Groves

Webster Groves (USC00238791) is a weather station in Missouri, United States at 38.57 latitude and -90.37 longitude, 189 m (620 ft) above sea level.
The station reports from 1945 to 1974, 30 years of record.
1,464 records set at Webster Groves still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.

About the Station

Location: Missouri, United States, 38.57 latitude, -90.37 longitude.
Elevation: 189 m (620 ft).
Period of record: 1945 to 1974, 30 years.
Eligible elements: prcp, snow.

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 Webster Groves. 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 Webster Groves, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.9 C (75.0 F)	-26.1 C (-15.0 F)	n/a	n/a
Feb	29.4 C (84.9 F)	-24.4 C (-11.9 F)	n/a	n/a
Mar	31.1 C (88.0 F)	-17.2 C (1.0 F)	n/a	n/a
Apr	33.3 C (91.9 F)	-5.0 C (23.0 F)	n/a	n/a
May	36.1 C (97.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jun	41.7 C (107.1 F)	6.1 C (43.0 F)	n/a	n/a
Jul	47.2 C (117.0 F)	6.1 C (43.0 F)	n/a	n/a
Aug	41.1 C (106.0 F)	7.8 C (46.0 F)	n/a	n/a
Sep	40.0 C (104.0 F)	1.1 C (34.0 F)	n/a	n/a
Oct	34.4 C (93.9 F)	-6.1 C (21.0 F)	n/a	n/a
Nov	27.8 C (82.0 F)	-17.8 C (0.0 F)	n/a	n/a
Dec	24.4 C (75.9 F)	-21.1 C (-6.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Webster Groves still stand. 1963 holds the most, with 90.

Standing records at Webster Groves by the year they were set
Year set	Standing records
1946	39
1947	64
1948	54
1949	47
1950	81
1951	61
1952	74
1953	63
1954	82
1955	47
1956	48
1957	33
1958	42
1959	44
1960	38
1961	39
1962	60
1963	90
1964	49
1965	66
1966	44
1967	49
1968	33
1969	22
1970	43
1971	39
1972	53
1973	16
1974	44

Wettest Day of Each Month

Jun: 275.6 mm (10.9 in)

The wettest day on record for each calendar month at Webster Groves. The most was 275.6 mm (10.9 in) on 15 June 1957.

Record daily precipitation for each month at Webster Groves
Month	Record daily precipitation (mm)	Date
Jan	71.1 mm (2.8 in)	28 January 1969
Feb	72.9 mm (2.9 in)	26 February 1957
Mar	45.7 mm (1.8 in)	4 March 1963
Apr	50.8 mm (2.0 in)	19 April 1970
May	82.3 mm (3.2 in)	8 May 1961
Jun	275.6 mm (10.9 in)	15 June 1957
Jul	119.9 mm (4.7 in)	20 July 1949
Aug	123.7 mm (4.9 in)	15 August 1946
Sep	96.3 mm (3.8 in)	13 September 1945
Oct	83.8 mm (3.3 in)	25 October 1947
Nov	106.7 mm (4.2 in)	1 November 1972
Dec	76.2 mm (3.0 in)	10 December 1971

Period of Record Coverage

1946 to 1974

29 years of record at Webster Groves, 1946 to 1974. 8 years have data for under 90 percent of days and are left out of rankings: 1946, 1950, 1955, 1967, 1968, 1969, 1973, 1974.

Days with data per year at Webster Groves
Year	Days with data	Share of year	Complete
1946	214	59%	No
1947	364	100%	Yes
1948	366	100%	Yes
1949	346	95%	Yes
1950	283	78%	No
1951	364	100%	Yes
1952	359	98%	Yes
1953	357	98%	Yes
1954	360	99%	Yes
1955	251	69%	No
1956	351	96%	Yes
1957	361	99%	Yes
1958	361	99%	Yes
1959	358	98%	Yes
1960	352	96%	Yes
1961	364	100%	Yes
1962	365	100%	Yes
1963	363	99%	Yes
1964	366	100%	Yes
1965	364	100%	Yes
1966	345	95%	Yes
1967	301	82%	No
1968	268	73%	No
1969	235	64%	No
1970	350	96%	Yes
1971	334	92%	Yes
1972	354	97%	Yes
1973	292	80%	No
1974	281	77%	No

Latest Records

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

Climate Trend

17 complete years, 1947 to 1972

One stripe for each of 17 complete years at Webster Groves, 1947 to 1972. Blue stripes are years cooler than the station's own mean of 13.4 C (56.2 F); red stripes are warmer. The coolest year was 1951, at 12.1 C (53.8 F), and the warmest was 1954, at 14.6 C (58.3 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Webster Groves as warming stripes, 1947 to 1972
Year	Annual mean temperature	Difference from the station mean
1947	13.1 C	-0.40 C
1948	13.1 C	-0.38 C
1949	13.2 C	-0.29 C
1951	12.1 C	-1.34 C
1952	13.5 C	+0.09 C
1954	14.6 C	+1.16 C
1957	13.8 C	+0.30 C
1958	12.9 C	-0.59 C
1959	13.9 C	+0.48 C
1960	13.3 C	-0.18 C
1961	13.2 C	-0.22 C
1962	13.5 C	+0.00 C
1963	13.5 C	+0.04 C
1964	14.0 C	+0.56 C
1965	14.3 C	+0.81 C
1970	13.4 C	-0.04 C
1972	13.4 C	-0.08 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

1945 to 1974

Yearly extremes at Webster Groves: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	47.2 C (117.0 F)	1954	37.2 C (99.0 F)	29
Coldest night (TNn)	-26.1 C (-15.0 F)	1963	-19.4 C (-2.9 F)	29
Wettest day (Rx1day)	275.6 mm (10.9 in)	1957	59.6 mm (2.3 in)	30
Wettest five days (Rx5day)	291.8 mm (11.5 in)	1957	99.2 mm (3.9 in)	30
Longest dry spell (CDD)	33 days	1963	23 days	30

Hottest day (TXx)

The hottest day of the year at Webster Groves, 1945 to 1974. The record is 47.2 C (117.0 F) in 1954, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Webster Groves by year
Year	Hottest day (TXx)
1945	n/a
1946	36.7 C (98.1 F)
1947	40.0 C (104.0 F)
1948	38.3 C (100.9 F)
1949	35.6 C (96.1 F)
1950	35.0 C (95.0 F)
1951	36.7 C (98.1 F)
1952	41.7 C (107.1 F)
1953	38.9 C (102.0 F)
1954	47.2 C (117.0 F)
1955	37.8 C (100.0 F)
1956	37.2 C (99.0 F)
1957	35.0 C (95.0 F)
1958	35.0 C (95.0 F)
1959	36.1 C (97.0 F)
1960	37.2 C (99.0 F)
1961	35.0 C (95.0 F)
1962	41.1 C (106.0 F)
1963	38.9 C (102.0 F)
1964	41.1 C (106.0 F)
1965	38.9 C (102.0 F)
1966	42.2 C (108.0 F)
1967	35.0 C (95.0 F)
1968	35.0 C (95.0 F)
1969	35.6 C (96.1 F)
1970	39.4 C (102.9 F)
1971	38.3 C (100.9 F)
1972	36.7 C (98.1 F)
1973	35.0 C (95.0 F)
1974	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at Webster Groves, 1945 to 1974. The record is -26.1 C (-15.0 F) in 1963, marked on the chart; the median year is -19.4 C (-2.9 F).

Coldest night (TNn) at Webster Groves by year
Year	Coldest night (TNn)
1945	n/a
1946	-12.2 C (10.0 F)
1947	-17.2 C (1.0 F)
1948	-20.6 C (-5.1 F)
1949	-12.2 C (10.0 F)
1950	-19.4 C (-2.9 F)
1951	-24.4 C (-11.9 F)
1952	-15.6 C (3.9 F)
1953	-16.1 C (3.0 F)
1954	-16.7 C (1.9 F)
1955	-20.6 C (-5.1 F)
1956	-13.9 C (7.0 F)
1957	-17.2 C (1.0 F)
1958	-20.6 C (-5.1 F)
1959	-20.6 C (-5.1 F)
1960	-16.7 C (1.9 F)
1961	-19.4 C (-2.9 F)
1962	-22.8 C (-9.0 F)
1963	-26.1 C (-15.0 F)
1964	-17.8 C (0.0 F)
1965	-21.7 C (-7.1 F)
1966	-23.9 C (-11.0 F)
1967	-17.2 C (1.0 F)
1968	-22.8 C (-9.0 F)
1969	-17.2 C (1.0 F)
1970	-22.2 C (-8.0 F)
1971	-17.2 C (1.0 F)
1972	-20.6 C (-5.1 F)
1973	-23.3 C (-9.9 F)
1974	-22.8 C (-9.0 F)

Wettest day (Rx1day)

The wettest day of the year at Webster Groves, 1945 to 1974. The record is 275.6 mm (10.9 in) in 1957, marked on the chart; the median year is 59.6 mm (2.3 in).

Wettest day (Rx1day) at Webster Groves by year
Year	Wettest day (Rx1day)
1945	96.3 mm (3.8 in)
1946	123.7 mm (4.9 in)
1947	83.8 mm (3.3 in)
1948	61.7 mm (2.4 in)
1949	119.9 mm (4.7 in)
1950	48.3 mm (1.9 in)
1951	48.3 mm (1.9 in)
1952	49.5 mm (1.9 in)
1953	49.3 mm (1.9 in)
1954	95.0 mm (3.7 in)
1955	77.7 mm (3.1 in)
1956	68.1 mm (2.7 in)
1957	275.6 mm (10.9 in)
1958	50.3 mm (2.0 in)
1959	56.1 mm (2.2 in)
1960	71.6 mm (2.8 in)
1961	82.3 mm (3.2 in)
1962	50.8 mm (2.0 in)
1963	61.2 mm (2.4 in)
1964	57.9 mm (2.3 in)
1965	57.4 mm (2.3 in)
1966	46.0 mm (1.8 in)
1967	52.8 mm (2.1 in)
1968	50.8 mm (2.0 in)
1969	71.1 mm (2.8 in)
1970	50.8 mm (2.0 in)
1971	76.2 mm (3.0 in)
1972	106.7 mm (4.2 in)
1973	46.0 mm (1.8 in)
1974	53.3 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Webster Groves, 1945 to 1974. The record is 291.8 mm (11.5 in) in 1957, marked on the chart; the median year is 99.2 mm (3.9 in).

Wettest five days (Rx5day) at Webster Groves by year
Year	Wettest five days (Rx5day)
1945	122.4 mm (4.8 in)
1946	245.7 mm (9.7 in)
1947	133.8 mm (5.3 in)
1948	86.1 mm (3.4 in)
1949	140.3 mm (5.5 in)
1950	95.8 mm (3.8 in)
1951	78.0 mm (3.1 in)
1952	67.0 mm (2.6 in)
1953	53.6 mm (2.1 in)
1954	103.2 mm (4.1 in)
1955	90.1 mm (3.5 in)
1956	87.2 mm (3.4 in)
1957	291.8 mm (11.5 in)
1958	114.6 mm (4.5 in)
1959	91.7 mm (3.6 in)
1960	136.7 mm (5.4 in)
1961	227.6 mm (9.0 in)
1962	113.0 mm (4.4 in)
1963	80.0 mm (3.1 in)
1964	73.7 mm (2.9 in)
1965	64.7 mm (2.5 in)
1966	64.8 mm (2.6 in)
1967	84.2 mm (3.3 in)
1968	102.6 mm (4.0 in)
1969	93.6 mm (3.7 in)
1970	108.0 mm (4.3 in)
1971	149.9 mm (5.9 in)
1972	137.5 mm (5.4 in)
1973	75.6 mm (3.0 in)
1974	104.2 mm (4.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Webster Groves, 1945 to 1974. The record is 33 days in 1963, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Webster Groves by year
Year	Longest dry spell (CDD)
1945	16 days
1946	23 days
1947	24 days
1948	23 days
1949	21 days
1950	30 days
1951	16 days
1952	23 days
1953	23 days
1954	20 days
1955	29 days
1956	26 days
1957	22 days
1958	17 days
1959	20 days
1960	17 days
1961	18 days
1962	22 days
1963	33 days
1964	29 days
1965	17 days
1966	20 days
1967	24 days
1968	24 days
1969	18 days
1970	28 days
1971	21 days
1972	25 days
1973	16 days
1974	28 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 Webster Groves standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Webster Groves 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 2026-10-16 (16 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).