Annapolis 3 SW Weather Records (USC00230179)

Record envelope, standing records and threshold days for Annapolis 3 SW (USC00230179), Missouri, United States, with 56 years of record.

Key Facts for Annapolis 3 SW

Annapolis 3 SW (USC00230179) is a weather station in Missouri, United States at 37.30 latitude and -90.77 longitude, 180 m (591 ft) above sea level.
The station reports from 1923 to 1978, 56 years of record.
1,464 records set at Annapolis 3 SW still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Annapolis 3 SW set a daily record precipitation of 53.3 mm (2.1 in) on 26 November 1978.

About the Station

Location: Missouri, United States, 37.30 latitude, -90.77 longitude.
Elevation: 180 m (591 ft).
Period of record: 1923 to 1978, 56 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 Annapolis 3 SW. 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 Annapolis 3 SW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.3 C (73.9 F)	-31.1 C (-24.0 F)	n/a	n/a
Feb	25.6 C (78.1 F)	-22.2 C (-8.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-21.7 C (-7.1 F)	n/a	n/a
Apr	32.2 C (90.0 F)	-8.9 C (16.0 F)	n/a	n/a
May	33.9 C (93.0 F)	-5.0 C (23.0 F)	n/a	n/a
Jun	35.6 C (96.1 F)	1.1 C (34.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	5.6 C (42.1 F)	n/a	n/a
Aug	37.8 C (100.0 F)	2.2 C (36.0 F)	n/a	n/a
Sep	37.8 C (100.0 F)	-1.7 C (28.9 F)	n/a	n/a
Oct	32.2 C (90.0 F)	-8.3 C (17.1 F)	n/a	n/a
Nov	29.4 C (84.9 F)	-19.4 C (-2.9 F)	n/a	n/a
Dec	25.6 C (78.1 F)	-22.2 C (-8.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Annapolis 3 SW still stand. 1974 holds the most, with 134.

Wettest Day of Each Month

Jul: 127.0 mm (5.0 in)

The wettest day on record for each calendar month at Annapolis 3 SW. The most was 127.0 mm (5.0 in) on 3 July 1976.

Record daily precipitation for each month at Annapolis 3 SW
Month	Record daily precipitation (mm)	Date
Jan	110.5 mm (4.4 in)	1 January 1948
Feb	97.0 mm (3.8 in)	26 February 1945
Mar	68.3 mm (2.7 in)	21 March 1955
Apr	71.1 mm (2.8 in)	23 April 1944
May	126.7 mm (5.0 in)	10 May 1950
Jun	110.5 mm (4.4 in)	8 June 1945
Jul	127.0 mm (5.0 in)	3 July 1976
Aug	102.9 mm (4.1 in)	29 August 1974
Sep	76.5 mm (3.0 in)	25 September 1960
Oct	80.8 mm (3.2 in)	18 October 1941
Nov	67.3 mm (2.6 in)	15 November 1958
Dec	82.0 mm (3.2 in)	21 December 1967

Period of Record Coverage

1963 to 1978

15 years of record at Annapolis 3 SW, 1963 to 1978. 4 years have data for under 90 percent of days and are left out of rankings: 1963, 1964, 1969, 1970.

Days with data per year at Annapolis 3 SW
Year	Days with data	Share of year	Complete
1963	63	17%	No
1964	90	25%	No
1966	346	95%	Yes
1967	343	94%	Yes
1968	357	98%	Yes
1969	214	59%	No
1970	307	84%	No
1971	364	100%	Yes
1972	366	100%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	334	92%	Yes
1978	332	91%	Yes

Latest Records

Latest records at Annapolis 3 SW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
26 November 1978	Annapolis 3 SW, US	daily rain	53.3 mm (2.1 in)	19.5 mm (0.8 in)	32 years	27 of 100 (Routine)
30 August 1978	Annapolis 3 SW, US	daily rain	43.2 mm (1.7 in)	7.4 mm (0.29 in)	19 years	14 of 100 (Routine)
15 July 1978	Annapolis 3 SW, US	daily rain	16.3 mm (0.6 in)	6.1 mm (0.24 in)	23 years	14 of 100 (Routine)
11 July 1978	Annapolis 3 SW, US	daily rain	12.7 mm (0.5 in)	3.3 mm (0.13 in)	27 years	14 of 100 (Routine)
10 July 1978	Annapolis 3 SW, US	daily rain	121.9 mm (4.8 in)	74.4 mm (2.9 in)	27 years	53 of 100 (Notable)
20 May 1978	Annapolis 3 SW, US	daily rain	18.8 mm (0.7 in)	1.0 mm (0.04 in)	32 years	14 of 100 (Routine)
4 May 1978	Annapolis 3 SW, US	daily rain (Tie)	5.8 mm (0.23 in)	tie	29 years	3 of 100 (Routine)
17 February 1978	Annapolis 3 SW, US	daily snowfall	0.8 cm (0.3 in)	0.8 cm (0.3 in)	34 years	16 of 100 (Routine)
15 February 1978	Annapolis 3 SW, US	daily snowfall	0.8 cm (0.3 in)	0.8 cm (0.3 in)	34 years	16 of 100 (Routine)
24 January 1978	Annapolis 3 SW, US	daily rain	6.9 mm (0.27 in)	2.8 mm (0.11 in)	0 years	7 of 100 (Routine)
17 January 1978	Annapolis 3 SW, US	monthly snowfall (Tie)	17.8 cm (7.0 in)	tie	1 year	3 of 100 (Routine)
16 January 1978	Annapolis 3 SW, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	54 years	47 of 100 (Notable)
21 December 1977	Annapolis 3 SW, US	daily snowfall	1.3 cm (0.5 in)	1.3 cm (0.5 in)	34 years	17 of 100 (Routine)
14 December 1977	Annapolis 3 SW, US	daily rain	20.3 mm (0.8 in)	7.6 mm (0.30 in)	10 years	13 of 100 (Routine)
5 December 1977	Annapolis 3 SW, US	daily rain	48.5 mm (1.9 in)	12.2 mm (0.5 in)	23 years	20 of 100 (Routine)
1 December 1977	Annapolis 3 SW, US	daily rain	26.9 mm (1.1 in)	10.6 mm (0.4 in)	8 years	15 of 100 (Routine)
1 November 1977	Annapolis 3 SW, US	daily rain	50.8 mm (2.0 in)	2.5 mm (0.10 in)	4 years	7 of 100 (Routine)
8 October 1977	Annapolis 3 SW, US	daily rain	19.8 mm (0.8 in)	6.6 mm (0.26 in)	16 years	14 of 100 (Routine)
16 September 1977	Annapolis 3 SW, US	daily rain	19.6 mm (0.8 in)	4.9 mm (0.19 in)	8 years	10 of 100 (Routine)
24 August 1977	Annapolis 3 SW, US	daily rain	33.5 mm (1.3 in)	3.0 mm (0.12 in)	36 years	17 of 100 (Routine)

Extremes by Year

1923 to 1978

Yearly extremes at Annapolis 3 SW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.4 C (102.9 F)	1966	36.1 C (97.0 F)	15
Coldest night (TNn)	-31.1 C (-24.0 F)	1977	-21.1 C (-6.0 F)	15
Wettest day (Rx1day)	127.0 mm (5.0 in)	1976	70.9 mm (2.8 in)	42
Wettest five days (Rx5day)	246.4 mm (9.7 in)	1945	105.7 mm (4.2 in)	38
Longest dry spell (CDD)	36 days	1968	20 days	38

Hottest day (TXx)

The hottest day of the year at Annapolis 3 SW, 1923 to 1978. The record is 39.4 C (102.9 F) in 1966, marked on the chart; the median year is 36.1 C (97.0 F).

Hottest day (TXx) at Annapolis 3 SW by year
Year	Hottest day (TXx)
1923	n/a
1924	n/a
1925	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	23.3 C (73.9 F)
1964	33.9 C (93.0 F)
1966	39.4 C (102.9 F)
1967	35.6 C (96.1 F)
1968	35.0 C (95.0 F)
1969	30.6 C (87.1 F)
1970	37.8 C (100.0 F)
1971	38.3 C (100.9 F)
1972	37.2 C (99.0 F)
1973	33.9 C (93.0 F)
1974	37.8 C (100.0 F)
1975	36.1 C (97.0 F)
1976	36.1 C (97.0 F)
1977	37.2 C (99.0 F)
1978	36.1 C (97.0 F)

Coldest night (TNn)

The coldest night of the year at Annapolis 3 SW, 1923 to 1978. The record is -31.1 C (-24.0 F) in 1977, marked on the chart; the median year is -21.1 C (-6.0 F).

Coldest night (TNn) at Annapolis 3 SW by year
Year	Coldest night (TNn)
1923	n/a
1924	n/a
1925	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	-21.1 C (-6.0 F)
1964	-26.7 C (-16.1 F)
1966	-21.1 C (-6.0 F)
1967	-21.7 C (-7.1 F)
1968	-21.1 C (-6.0 F)
1969	-17.2 C (1.0 F)
1970	-25.6 C (-14.1 F)
1971	-18.3 C (-0.9 F)
1972	-20.6 C (-5.1 F)
1973	-18.3 C (-0.9 F)
1974	-19.4 C (-2.9 F)
1975	-17.2 C (1.0 F)
1976	-23.3 C (-9.9 F)
1977	-31.1 C (-24.0 F)
1978	-22.8 C (-9.0 F)

Wettest day (Rx1day)

The wettest day of the year at Annapolis 3 SW, 1923 to 1978. The record is 127.0 mm (5.0 in) in 1976, marked on the chart; the median year is 70.9 mm (2.8 in).

Wettest day (Rx1day) at Annapolis 3 SW by year
Year	Wettest day (Rx1day)
1923	39.6 mm (1.6 in)
1924	51.6 mm (2.0 in)
1925	20.8 mm (0.8 in)
1939	70.6 mm (2.8 in)
1940	46.5 mm (1.8 in)
1941	80.8 mm (3.2 in)
1942	53.3 mm (2.1 in)
1943	69.1 mm (2.7 in)
1944	71.1 mm (2.8 in)
1945	110.5 mm (4.4 in)
1946	95.5 mm (3.8 in)
1947	76.5 mm (3.0 in)
1948	110.5 mm (4.4 in)
1949	60.7 mm (2.4 in)
1950	126.7 mm (5.0 in)
1951	68.8 mm (2.7 in)
1952	50.5 mm (2.0 in)
1953	39.6 mm (1.6 in)
1954	78.7 mm (3.1 in)
1955	68.3 mm (2.7 in)
1956	89.7 mm (3.5 in)
1957	67.3 mm (2.6 in)
1958	79.8 mm (3.1 in)
1959	55.6 mm (2.2 in)
1960	76.5 mm (3.0 in)
1961	74.9 mm (2.9 in)
1962	71.9 mm (2.8 in)
1963	51.1 mm (2.0 in)
1964	35.6 mm (1.4 in)
1966	75.7 mm (3.0 in)
1967	82.0 mm (3.2 in)
1968	61.7 mm (2.4 in)
1969	66.0 mm (2.6 in)
1970	54.9 mm (2.2 in)
1971	75.4 mm (3.0 in)
1972	96.5 mm (3.8 in)
1973	85.1 mm (3.4 in)
1974	102.9 mm (4.1 in)
1975	57.9 mm (2.3 in)
1976	127.0 mm (5.0 in)
1977	60.2 mm (2.4 in)
1978	121.9 mm (4.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Annapolis 3 SW, 1923 to 1978. The record is 246.4 mm (9.7 in) in 1945, marked on the chart; the median year is 105.7 mm (4.2 in).

Wettest five days (Rx5day) at Annapolis 3 SW by year
Year	Wettest five days (Rx5day)
1923	60.0 mm (2.4 in)
1924	71.1 mm (2.8 in)
1925	38.1 mm (1.5 in)
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	55.9 mm (2.2 in)
1944	88.9 mm (3.5 in)
1945	246.4 mm (9.7 in)
1946	106.4 mm (4.2 in)
1947	139.4 mm (5.5 in)
1948	121.2 mm (4.8 in)
1949	122.7 mm (4.8 in)
1950	185.1 mm (7.3 in)
1951	104.1 mm (4.1 in)
1952	71.4 mm (2.8 in)
1953	50.0 mm (2.0 in)
1954	92.7 mm (3.6 in)
1955	83.8 mm (3.3 in)
1956	104.9 mm (4.1 in)
1957	129.1 mm (5.1 in)
1958	130.7 mm (5.1 in)
1959	91.5 mm (3.6 in)
1960	91.0 mm (3.6 in)
1961	144.2 mm (5.7 in)
1962	124.7 mm (4.9 in)
1963	98.1 mm (3.9 in)
1964	35.6 mm (1.4 in)
1966	134.4 mm (5.3 in)
1967	93.7 mm (3.7 in)
1968	88.1 mm (3.5 in)
1969	112.0 mm (4.4 in)
1970	103.4 mm (4.1 in)
1971	139.0 mm (5.5 in)
1972	129.6 mm (5.1 in)
1973	130.1 mm (5.1 in)
1974	117.4 mm (4.6 in)
1975	103.1 mm (4.1 in)
1976	140.5 mm (5.5 in)
1977	119.6 mm (4.7 in)
1978	136.1 mm (5.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Annapolis 3 SW, 1923 to 1978. The record is 36 days in 1968, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at Annapolis 3 SW by year
Year	Longest dry spell (CDD)
1923	17 days
1924	19 days
1925	14 days
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	27 days
1944	29 days
1945	26 days
1946	18 days
1947	32 days
1948	20 days
1949	20 days
1950	19 days
1951	14 days
1952	24 days
1953	31 days
1954	19 days
1955	29 days
1956	22 days
1957	22 days
1958	25 days
1959	15 days
1960	15 days
1961	15 days
1962	17 days
1963	31 days
1964	11 days
1966	28 days
1967	20 days
1968	36 days
1969	19 days
1970	24 days
1971	27 days
1972	17 days
1973	15 days
1974	19 days
1975	22 days
1976	26 days
1977	20 days
1978	21 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 Annapolis 3 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Annapolis 3 SW 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).