Built 2026-10-15 (15 October 2026)

Hempstead Weather Records (USC00414080)

Record envelope, standing records and threshold days for Hempstead (USC00414080), Texas, United States, with 76 years of record.

Key Facts for Hempstead

  • Hempstead (USC00414080) is a weather station in Texas, United States at 30.10 latitude and -96.08 longitude, 77 m (251 ft) above sea level.
  • The station reports from 1903 to 1978, 76 years of record.
  • 1,464 records set at Hempstead still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Hempstead set a daily record precipitation of 36.8 mm (1.4 in) on 1 September 1978.

About the Station

  • Location: Texas, United States, 30.10 latitude, -96.08 longitude.
  • Elevation: 77 m (251 ft).
  • Period of record: 1903 to 1978, 76 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Hempstead, with 2026 drawn through them The band shows the record high and record low for each calendar day at Hempstead. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Hempstead. 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 Hempstead, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan29.4 C (84.9 F)-10.6 C (12.9 F)n/an/a
Feb29.4 C (84.9 F)-6.1 C (21.0 F)n/an/a
Mar33.3 C (91.9 F)-5.0 C (23.0 F)n/an/a
Apr32.2 C (90.0 F)0.6 C (33.1 F)n/an/a
May35.6 C (96.1 F)7.2 C (45.0 F)n/an/a
Jun37.8 C (100.0 F)11.7 C (53.1 F)n/an/a
Jul39.4 C (102.9 F)15.0 C (59.0 F)n/an/a
Aug41.7 C (107.1 F)15.6 C (60.1 F)n/an/a
Sep39.4 C (102.9 F)8.3 C (46.9 F)n/an/a
Oct35.6 C (96.1 F)2.8 C (37.0 F)n/an/a
Nov32.8 C (91.0 F)-5.6 C (21.9 F)n/an/a
Dec28.3 C (82.9 F)-7.2 C (19.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Hempstead by the year they were set 1,464 records at Hempstead still stand. 1967 holds the most, with 133. 0501001501963: 501964: 791965: 1031966: 911967: 1331968: 721969: 1121970: 1051971: 911972: 971973: 851974: 1081975: 771976: 1031977: 801978: 7819631965196719691971197319751977
1,464 records at Hempstead still stand. 1967 holds the most, with 133.
Standing records at Hempstead by the year they were set
Year setStanding records
196350
196479
1965103
196691
1967133
196872
1969112
1970105
197191
197297
197385
1974108
197577
1976103
197780
197878

All-Time Record Progression

1 new records
When Hempstead set new all-time records 1 all-time records were set at Hempstead between 24 November 1940 and 24 November 1940. Each dot is a new record. Record daily precipitation24 November 1940: Record daily precipitation 406.4 mm (16.0 in)1940
1 all-time records were set at Hempstead between 24 November 1940 and 24 November 1940. Each dot is a new record.
When Hempstead set new all-time records
DateKindDetail
1940-11-24Record daily precipitationRecord daily precipitation 406.4 mm (16.0 in)

Wettest Day of Each Month

Nov: 406.4 mm (16.0 in)
Record daily precipitation for each month at Hempstead The wettest day on record for each calendar month at Hempstead. The most was 406.4 mm (16.0 in) on 24 November 1940. 0200400600 Jan: 78.7 mm (3.1 in), 21 January 1906 Jan Feb: 110.2 mm (4.3 in), 9 February 1946 Feb Mar: 152.4 mm (6.0 in), 27 March 1914 Mar Apr: 168.4 mm (6.6 in), 30 April 1960 Apr May: 132.1 mm (5.2 in), 11 May 1959 May Jun: 141.0 mm (5.6 in), 13 June 1973 Jun Jul: 83.8 mm (3.3 in), 16 July 1936 Jul Aug: 158.8 mm (6.3 in), 28 August 1945 Aug Sep: 185.7 mm (7.3 in), 15 September 1968 Sep Oct: 170.9 mm (6.7 in), 15 October 1957 Oct Nov: 406.4 mm (16.0 in), 24 November 1940 Nov Dec: 94.0 mm (3.7 in), 2 December 1914 Dec
The wettest day on record for each calendar month at Hempstead. The most was 406.4 mm (16.0 in) on 24 November 1940.
Record daily precipitation for each month at Hempstead
MonthRecord daily precipitation (mm)Date
Jan78.7 mm (3.1 in)21 January 1906
Feb110.2 mm (4.3 in)9 February 1946
Mar152.4 mm (6.0 in)27 March 1914
Apr168.4 mm (6.6 in)30 April 1960
May132.1 mm (5.2 in)11 May 1959
Jun141.0 mm (5.6 in)13 June 1973
Jul83.8 mm (3.3 in)16 July 1936
Aug158.8 mm (6.3 in)28 August 1945
Sep185.7 mm (7.3 in)15 September 1968
Oct170.9 mm (6.7 in)15 October 1957
Nov406.4 mm (16.0 in)24 November 1940
Dec94.0 mm (3.7 in)2 December 1914

Period of Record Coverage

1963 to 1978
Days with data per year at Hempstead 16 years of record at Hempstead, 1963 to 1978. 2 years have data for under 90 percent of days and are left out of rankings: 1963, 1978. 1963: 108 of 365 days1964: 334 of 366 days1965: 359 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 362 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 365 of 366 days1977: 363 of 365 days1978: 272 of 365 days196519701975
16 years of record at Hempstead, 1963 to 1978. 2 years have data for under 90 percent of days and are left out of rankings: 1963, 1978.
Days with data per year at Hempstead
YearDays with dataShare of yearComplete
196310830%No
196433491%Yes
196535998%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
197136299%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976365100%Yes
197736399%Yes
197827275%No

Latest Records

20
Latest records at Hempstead
DateStationRecordValueBeat old record byOld record stoodSignificance
1 September 1978Hempstead, USdaily rain36.8 mm (1.4 in)16.2 mm (0.6 in)28 years22 of 100 (Routine)
7 June 1978Hempstead, USdaily rain121.9 mm (4.8 in)90.4 mm (3.6 in)36 years58 of 100 (Notable)
8 February 1978Hempstead, USdaily rain47.5 mm (1.9 in)37.3 mm (1.5 in)64 years49 of 100 (Notable)
19 January 1978Hempstead, USdaily rain35.6 mm (1.4 in)5.6 mm (0.22 in)4 years12 of 100 (Routine)
14 September 1977Hempstead, USdaily rain52.1 mm (2.1 in)1.3 mm (0.05 in)3 years7 of 100 (Routine)
30 June 1977Hempstead, USdaily rain (Tie)50.8 mm (2.0 in)tie36 years4 of 100 (Routine)
15 June 1977Hempstead, USdaily rain43.9 mm (1.7 in)5.8 mm (0.23 in)0 years9 of 100 (Routine)
22 May 1977Hempstead, USdaily rain29.2 mm (1.1 in)4.3 mm (0.17 in)47 years22 of 100 (Routine)
11 February 1977Hempstead, USdaily rain36.8 mm (1.4 in)11.9 mm (0.5 in)42 years26 of 100 (Routine)
15 June 1976Hempstead, USdaily rain38.1 mm (1.5 in)7.1 mm (0.28 in)3 years10 of 100 (Routine)
31 May 1976Hempstead, USdaily rain73.7 mm (2.9 in)33.1 mm (1.3 in)52 years36 of 100 (Notable)
25 October 1975Hempstead, USdaily rain58.4 mm (2.3 in)9.1 mm (0.36 in)25 years18 of 100 (Routine)
1 August 1975Hempstead, USdaily rain17.8 mm (0.7 in)8.1 mm (0.32 in)20 years16 of 100 (Routine)
7 November 1974Hempstead, USdaily rain43.7 mm (1.7 in)0.5 mm (0.02 in)48 years21 of 100 (Routine)
14 September 1974Hempstead, USdaily rain50.8 mm (2.0 in)23.1 mm (0.9 in)0 years18 of 100 (Routine)
2 August 1974Hempstead, USdaily rain34.8 mm (1.4 in)10.7 mm (0.4 in)0 years12 of 100 (Routine)
27 July 1974Hempstead, USdaily rain39.9 mm (1.6 in)27.2 mm (1.1 in)45 years36 of 100 (Notable)
19 January 1974Hempstead, USdaily rain30.0 mm (1.2 in)2.8 mm (0.11 in)6 years10 of 100 (Routine)
24 December 1973Hempstead, USdaily rain47.5 mm (1.9 in)11.2 mm (0.4 in)11 years17 of 100 (Routine)
14 September 1973Hempstead, USdaily rain27.7 mm (1.1 in)12.5 mm (0.5 in)68 years33 of 100 (Routine)

Climate Trend

13 complete years, 1965 to 1977
Annual mean temperature at Hempstead as warming stripes, 1965 to 1977 One stripe for each of 13 complete years at Hempstead, 1965 to 1977. Blue stripes are years cooler than the station's own mean of 19.6 C (67.4 F); red stripes are warmer. The coolest year was 1976, at 18.8 C (65.9 F), and the warmest was 1971, at 20.5 C (68.8 F). The strongest colour marks a difference of 0.9 C (1.6 F). 1965: 19.6 C, -0.1 C from the station mean1966: 19.1 C, -0.5 C from the station mean1967: 20.0 C, +0.3 C from the station mean1968: 19.0 C, -0.7 C from the station mean1969: 20.0 C, +0.4 C from the station mean1970: 19.3 C, -0.4 C from the station mean1971: 20.5 C, +0.8 C from the station mean1972: 19.8 C, +0.2 C from the station mean1973: 19.7 C, 0.0 C from the station mean1974: 19.9 C, +0.2 C from the station mean1975: 19.7 C, +0.1 C from the station mean1976: 18.8 C, -0.8 C from the station mean1977: 20.2 C, +0.5 C from the station mean1965196619681970197219741976
One stripe for each of 13 complete years at Hempstead, 1965 to 1977. Blue stripes are years cooler than the station's own mean of 19.6 C (67.4 F); red stripes are warmer. The coolest year was 1976, at 18.8 C (65.9 F), and the warmest was 1971, at 20.5 C (68.8 F). The strongest colour marks a difference of 0.9 C (1.6 F).
Annual mean temperature at Hempstead as warming stripes, 1965 to 1977
YearAnnual mean temperatureDifference from the station mean
196519.6 C-0.09 C
196619.1 C-0.54 C
196720.0 C+0.31 C
196819.0 C-0.69 C
196920.0 C+0.36 C
197019.3 C-0.40 C
197120.5 C+0.81 C
197219.8 C+0.19 C
197319.7 C+0.00 C
197419.9 C+0.23 C
197519.7 C+0.07 C
197618.8 C-0.84 C
197720.2 C+0.54 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

1903 to 1978
Yearly extremes at Hempstead: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.7 C (107.1 F)196938.1 C (100.5 F)16
Coldest night (TNn)-10.6 C (12.9 F)1966-6.9 C (19.5 F)16
Wettest day (Rx1day)406.4 mm (16.0 in)194077.9 mm (3.1 in)76
Wettest five days (Rx5day)535.0 mm (21.1 in)1940112.8 mm (4.4 in)76
Longest dry spell (CDD)73 days191730 days76

Hottest day (TXx)

Hottest day (TXx) at Hempstead by year The hottest day of the year at Hempstead, 1903 to 1978. The record is 41.7 C (107.1 F) in 1969, marked on the chart; the median year is 38.1 C (100.5 F). 36384042192019401960Record: 41.7 C (107.1 F) in 1969
The hottest day of the year at Hempstead, 1903 to 1978. The record is 41.7 C (107.1 F) in 1969, marked on the chart; the median year is 38.1 C (100.5 F).
Hottest day (TXx) at Hempstead by year
YearHottest day (TXx)
1903n/a
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
196339.4 C (102.9 F)
196439.4 C (102.9 F)
196537.2 C (99.0 F)
196637.2 C (99.0 F)
196739.4 C (102.9 F)
196836.7 C (98.1 F)
196941.7 C (107.1 F)
197038.3 C (100.9 F)
197138.3 C (100.9 F)
197236.7 C (98.1 F)
197336.7 C (98.1 F)
197437.8 C (100.0 F)
197536.1 C (97.0 F)
197637.8 C (100.0 F)
197738.3 C (100.9 F)
197839.4 C (102.9 F)

Coldest night (TNn)

Coldest night (TNn) at Hempstead by year The coldest night of the year at Hempstead, 1903 to 1978. The record is -10.6 C (12.9 F) in 1966, marked on the chart; the median year is -6.9 C (19.5 F). -12-10-8-6-4-2192019401960Record: -10.6 C (12.9 F) in 1966
The coldest night of the year at Hempstead, 1903 to 1978. The record is -10.6 C (12.9 F) in 1966, marked on the chart; the median year is -6.9 C (19.5 F).
Coldest night (TNn) at Hempstead by year
YearColdest night (TNn)
1903n/a
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963-7.2 C (19.0 F)
1964-5.6 C (21.9 F)
1965-7.8 C (18.0 F)
1966-10.6 C (12.9 F)
1967-5.6 C (21.9 F)
1968-5.0 C (23.0 F)
1969-6.7 C (19.9 F)
1970-8.3 C (17.1 F)
1971-6.1 C (21.0 F)
1972-6.1 C (21.0 F)
1973-10.0 C (14.0 F)
1974-3.3 C (26.1 F)
1975-7.8 C (18.0 F)
1976-8.9 C (16.0 F)
1977-8.9 C (16.0 F)
1978-6.1 C (21.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Hempstead by year The wettest day of the year at Hempstead, 1903 to 1978. The record is 406.4 mm (16.0 in) in 1940, marked on the chart; the median year is 77.9 mm (3.1 in). 0100200300400500192019401960Record: 406.4 mm (16.0 in) in 1940
The wettest day of the year at Hempstead, 1903 to 1978. The record is 406.4 mm (16.0 in) in 1940, marked on the chart; the median year is 77.9 mm (3.1 in).
Wettest day (Rx1day) at Hempstead by year
YearWettest day (Rx1day)
190336.8 mm (1.4 in)
190463.5 mm (2.5 in)
1905101.9 mm (4.0 in)
190678.7 mm (3.1 in)
1907101.6 mm (4.0 in)
1908106.2 mm (4.2 in)
190949.5 mm (1.9 in)
191038.1 mm (1.5 in)
191163.5 mm (2.5 in)
191273.7 mm (2.9 in)
191368.6 mm (2.7 in)
1914152.4 mm (6.0 in)
1915157.5 mm (6.2 in)
191663.5 mm (2.5 in)
191749.8 mm (2.0 in)
191861.7 mm (2.4 in)
191999.3 mm (3.9 in)
192081.3 mm (3.2 in)
1921132.1 mm (5.2 in)
1922106.7 mm (4.2 in)
1923116.8 mm (4.6 in)
192458.7 mm (2.3 in)
1925154.4 mm (6.1 in)
192667.6 mm (2.7 in)
192762.7 mm (2.5 in)
192882.3 mm (3.2 in)
1929152.7 mm (6.0 in)
193074.9 mm (2.9 in)
193168.6 mm (2.7 in)
193263.0 mm (2.5 in)
193360.5 mm (2.4 in)
193470.6 mm (2.8 in)
1935112.3 mm (4.4 in)
193684.3 mm (3.3 in)
193768.6 mm (2.7 in)
193827.4 mm (1.1 in)
193952.6 mm (2.1 in)
1940406.4 mm (16.0 in)
194195.3 mm (3.8 in)
1942101.6 mm (4.0 in)
194386.4 mm (3.4 in)
194477.0 mm (3.0 in)
1945158.8 mm (6.3 in)
1946121.9 mm (4.8 in)
1947135.9 mm (5.4 in)
194863.2 mm (2.5 in)
194949.3 mm (1.9 in)
1950110.2 mm (4.3 in)
195146.0 mm (1.8 in)
195268.6 mm (2.7 in)
195394.7 mm (3.7 in)
195469.9 mm (2.8 in)
195555.4 mm (2.2 in)
195662.0 mm (2.4 in)
1957170.9 mm (6.7 in)
195874.2 mm (2.9 in)
1959132.1 mm (5.2 in)
1960168.4 mm (6.6 in)
1961121.9 mm (4.8 in)
1962127.0 mm (5.0 in)
196350.8 mm (2.0 in)
196466.0 mm (2.6 in)
1965101.6 mm (4.0 in)
196650.8 mm (2.0 in)
196768.6 mm (2.7 in)
1968185.7 mm (7.3 in)
196981.3 mm (3.2 in)
1970102.1 mm (4.0 in)
197158.4 mm (2.3 in)
1972104.1 mm (4.1 in)
1973141.0 mm (5.6 in)
197456.4 mm (2.2 in)
197583.8 mm (3.3 in)
197673.7 mm (2.9 in)
197757.9 mm (2.3 in)
1978121.9 mm (4.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Hempstead by year The wettest five days of the year at Hempstead, 1903 to 1978. The record is 535.0 mm (21.1 in) in 1940, marked on the chart; the median year is 112.8 mm (4.4 in). 0200400600192019401960Record: 535.0 mm (21.1 in) in 1940
The wettest five days of the year at Hempstead, 1903 to 1978. The record is 535.0 mm (21.1 in) in 1940, marked on the chart; the median year is 112.8 mm (4.4 in).
Wettest five days (Rx5day) at Hempstead by year
YearWettest five days (Rx5day)
190337.8 mm (1.5 in)
190494.5 mm (3.7 in)
1905114.3 mm (4.5 in)
190687.9 mm (3.5 in)
1907164.3 mm (6.5 in)
1908106.2 mm (4.2 in)
1909109.2 mm (4.3 in)
191086.9 mm (3.4 in)
191183.8 mm (3.3 in)
191273.7 mm (2.9 in)
1913120.6 mm (4.7 in)
1914228.6 mm (9.0 in)
1915120.6 mm (4.7 in)
191676.3 mm (3.0 in)
191782.1 mm (3.2 in)
191878.8 mm (3.1 in)
1919233.7 mm (9.2 in)
192038.1 mm (1.5 in)
192152.7 mm (2.1 in)
1922130.0 mm (5.1 in)
1923159.7 mm (6.3 in)
1924100.4 mm (4.0 in)
1925106.4 mm (4.2 in)
1926119.4 mm (4.7 in)
192798.2 mm (3.9 in)
1928113.6 mm (4.5 in)
1929232.7 mm (9.2 in)
1930100.8 mm (4.0 in)
193181.2 mm (3.2 in)
1932135.7 mm (5.3 in)
193367.2 mm (2.6 in)
193499.3 mm (3.9 in)
1935155.5 mm (6.1 in)
1936154.4 mm (6.1 in)
1937140.5 mm (5.5 in)
193873.9 mm (2.9 in)
193985.0 mm (3.3 in)
1940535.0 mm (21.1 in)
1941120.7 mm (4.8 in)
1942182.4 mm (7.2 in)
1943105.6 mm (4.2 in)
194490.0 mm (3.5 in)
1945306.1 mm (12.1 in)
1946138.7 mm (5.5 in)
1947177.3 mm (7.0 in)
194868.3 mm (2.7 in)
1949100.7 mm (4.0 in)
1950170.5 mm (6.7 in)
195181.1 mm (3.2 in)
1952101.1 mm (4.0 in)
1953162.5 mm (6.4 in)
1954100.4 mm (4.0 in)
1955104.5 mm (4.1 in)
195675.3 mm (3.0 in)
1957217.9 mm (8.6 in)
1958115.1 mm (4.5 in)
1959177.8 mm (7.0 in)
1960225.8 mm (8.9 in)
1961210.0 mm (8.3 in)
1962127.0 mm (5.0 in)
196354.6 mm (2.1 in)
1964117.3 mm (4.6 in)
1965103.1 mm (4.1 in)
196675.4 mm (3.0 in)
196776.7 mm (3.0 in)
1968338.9 mm (13.3 in)
1969143.8 mm (5.7 in)
1970151.1 mm (5.9 in)
1971107.2 mm (4.2 in)
1972199.8 mm (7.9 in)
1973261.1 mm (10.3 in)
1974112.0 mm (4.4 in)
1975124.4 mm (4.9 in)
197692.8 mm (3.7 in)
1977123.7 mm (4.9 in)
1978142.0 mm (5.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Hempstead by year The longest dry spell of the year at Hempstead, 1903 to 1978. The record is 73 days in 1917, marked on the chart; the median year is 30 days. 020406080192019401960Record: 73 days in 1917
The longest dry spell of the year at Hempstead, 1903 to 1978. The record is 73 days in 1917, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Hempstead by year
YearLongest dry spell (CDD)
190328 days
190441 days
190536 days
190629 days
190720 days
190827 days
190943 days
191036 days
191138 days
191234 days
191369 days
191441 days
191524 days
191650 days
191773 days
191841 days
191927 days
192024 days
192127 days
192233 days
192321 days
192435 days
192528 days
192623 days
192735 days
192821 days
192925 days
193052 days
193132 days
193242 days
193330 days
193456 days
193530 days
193633 days
193744 days
193816 days
193920 days
194045 days
194121 days
194217 days
194333 days
194442 days
194522 days
194627 days
194743 days
194834 days
194920 days
195030 days
195122 days
195251 days
195347 days
195426 days
195544 days
195630 days
195729 days
195830 days
195924 days
196028 days
196125 days
196252 days
196329 days
196424 days
196522 days
196636 days
196723 days
196826 days
196940 days
197039 days
197137 days
197222 days
197321 days
197423 days
197536 days
197619 days
197726 days
197839 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.

Rainfall Return Levels

58 years, 1904 to 1977

A day with at least 79.4 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 314.5 mm (12.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Hempstead: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years79.4 mm (3.1 in)
5 years116.2 mm (4.6 in)
10 years148.5 mm (5.8 in)
25 years201.6 mm (7.9 in)
50 years252.2 mm (9.9 in)
100 years314.5 mm (12.4 in)Longer than the 58 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 58 years of values from 1904 to 1977.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 406.4 mm (16.0 in) in 1940; 185.7 mm (7.3 in) in 1968; 170.9 mm (6.7 in) in 1957.

Download the Data

  • Data for Hempstead standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Hempstead 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

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