Rockport Marine Lab Weather Records (USC00417705)

Record envelope, standing records and threshold days for Rockport Marine Lab (USC00417705), Texas, United States, with 58 years of record.

Key Facts for Rockport Marine Lab

Rockport Marine Lab (USC00417705) is a weather station in Texas, United States at 28.02 latitude and -97.05 longitude, 3 m (10 ft) above sea level.
The station reports from 1901 to 1958, 58 years of record.
1,464 records set at Rockport Marine Lab still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Texas, United States, 28.02 latitude, -97.05 longitude.
Elevation: 3 m (10 ft).
Period of record: 1901 to 1958, 58 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 Rockport Marine Lab. 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 Rockport Marine Lab, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	28.9 C (84.0 F)	-7.2 C (19.0 F)	n/a	n/a
Feb	29.4 C (84.9 F)	-7.2 C (19.0 F)	n/a	n/a
Mar	29.4 C (84.9 F)	-2.2 C (28.0 F)	n/a	n/a
Apr	35.6 C (96.1 F)	4.4 C (39.9 F)	n/a	n/a
May	37.2 C (99.0 F)	12.8 C (55.0 F)	n/a	n/a
Jun	36.1 C (97.0 F)	15.6 C (60.1 F)	n/a	n/a
Jul	36.7 C (98.1 F)	20.0 C (68.0 F)	n/a	n/a
Aug	37.2 C (99.0 F)	20.0 C (68.0 F)	n/a	n/a
Sep	36.7 C (98.1 F)	14.4 C (57.9 F)	n/a	n/a
Oct	35.0 C (95.0 F)	6.1 C (43.0 F)	n/a	n/a
Nov	31.1 C (88.0 F)	-1.7 C (28.9 F)	n/a	n/a
Dec	27.8 C (82.0 F)	-2.8 C (27.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Rockport Marine Lab still stand. 1950 holds the most, with 119.

Standing records at Rockport Marine Lab by the year they were set
Year set	Standing records
1901	48
1902	64
1903	102
1904	77
1905	65
1906	80
1907	10
1911	103
1912	83
1913	100
1914	38
1916	48
1917	66
1948	117
1949	104
1950	119
1951	115
1952	82
1953	43

Wettest Day of Each Month

Oct: 253.0 mm (10.0 in)

The wettest day on record for each calendar month at Rockport Marine Lab. The most was 253.0 mm (10.0 in) on 23 October 1954.

Record daily precipitation for each month at Rockport Marine Lab
Month	Record daily precipitation (mm)	Date
Jan	135.9 mm (5.4 in)	5 January 1958
Feb	63.5 mm (2.5 in)	18 February 1905
Mar	123.2 mm (4.9 in)	10 March 1903
Apr	73.7 mm (2.9 in)	9 April 1912
May	76.7 mm (3.0 in)	7 May 1902
Jun	128.3 mm (5.1 in)	22 June 1905
Jul	195.6 mm (7.7 in)	16 July 1949
Aug	121.9 mm (4.8 in)	30 August 1953
Sep	215.9 mm (8.5 in)	15 September 1951
Oct	253.0 mm (10.0 in)	23 October 1954
Nov	81.3 mm (3.2 in)	2 November 1902
Dec	120.7 mm (4.8 in)	30 December 1904

Period of Record Coverage

1901 to 1953

19 years of record at Rockport Marine Lab, 1901 to 1953. 8 years have data for under 90 percent of days and are left out of rankings: 1901, 1907, 1914, 1916, 1917, 1950, 1952, 1953.

Days with data per year at Rockport Marine Lab
Year	Days with data	Share of year	Complete
1901	117	32%	No
1902	360	99%	Yes
1903	363	99%	Yes
1904	334	91%	Yes
1905	364	100%	Yes
1906	361	99%	Yes
1907	58	16%	No
1911	363	99%	Yes
1912	365	100%	Yes
1913	364	100%	Yes
1914	200	55%	No
1916	90	25%	No
1917	179	49%	No
1948	346	95%	Yes
1949	331	91%	Yes
1950	327	90%	No
1951	342	94%	Yes
1952	329	90%	No
1953	114	31%	No

Latest Records

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

Climate Trend

11 complete years, 1902 to 1951

One stripe for each of 11 complete years at Rockport Marine Lab, 1902 to 1951. Blue stripes are years cooler than the station's own mean of 21.3 C (70.3 F); red stripes are warmer. The coolest year was 1903, at 19.9 C (67.8 F), and the warmest was 1950, at 22.9 C (73.1 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Rockport Marine Lab as warming stripes, 1902 to 1951
Year	Annual mean temperature	Difference from the station mean
1902	21.0 C	-0.31 C
1903	19.9 C	-1.42 C
1905	20.0 C	-1.29 C
1906	20.9 C	-0.38 C
1911	21.6 C	+0.25 C
1912	21.1 C	-0.16 C
1913	20.9 C	-0.40 C
1948	21.5 C	+0.21 C
1949	22.2 C	+0.88 C
1950	22.9 C	+1.56 C
1951	22.4 C	+1.11 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

1901 to 1958

Yearly extremes at Rockport Marine Lab: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.2 C (99.0 F)	1950	33.9 C (93.0 F)	19
Coldest night (TNn)	-7.2 C (19.0 F)	1911	-2.8 C (27.0 F)	19
Wettest day (Rx1day)	253.0 mm (10.0 in)	1954	86.4 mm (3.4 in)	27
Wettest five days (Rx5day)	409.3 mm (16.1 in)	1951	144.7 mm (5.7 in)	27
Longest dry spell (CDD)	66 days	1905	45 days	27

Hottest day (TXx)

The hottest day of the year at Rockport Marine Lab, 1901 to 1958. The record is 37.2 C (99.0 F) in 1950, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at Rockport Marine Lab by year
Year	Hottest day (TXx)
1901	36.1 C (97.0 F)
1902	32.2 C (90.0 F)
1903	33.9 C (93.0 F)
1904	32.2 C (90.0 F)
1905	34.4 C (93.9 F)
1906	34.4 C (93.9 F)
1907	25.6 C (78.1 F)
1910	n/a
1911	33.3 C (91.9 F)
1912	32.8 C (91.0 F)
1913	32.2 C (90.0 F)
1914	31.7 C (89.1 F)
1915	n/a
1916	31.1 C (88.0 F)
1917	32.2 C (90.0 F)
1947	n/a
1948	36.7 C (98.1 F)
1949	36.1 C (97.0 F)
1950	37.2 C (99.0 F)
1951	37.2 C (99.0 F)
1952	36.1 C (97.0 F)
1953	35.6 C (96.1 F)
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a

Coldest night (TNn)

The coldest night of the year at Rockport Marine Lab, 1901 to 1958. The record is -7.2 C (19.0 F) in 1911, marked on the chart; the median year is -2.8 C (27.0 F).

Coldest night (TNn) at Rockport Marine Lab by year
Year	Coldest night (TNn)
1901	10.0 C (50.0 F)
1902	-1.1 C (30.0 F)
1903	-1.1 C (30.0 F)
1904	2.2 C (36.0 F)
1905	-5.6 C (21.9 F)
1906	-1.1 C (30.0 F)
1907	1.1 C (34.0 F)
1910	n/a
1911	-7.2 C (19.0 F)
1912	-6.7 C (19.9 F)
1913	-4.4 C (24.1 F)
1914	-3.3 C (26.1 F)
1915	n/a
1916	-2.2 C (28.0 F)
1917	-5.6 C (21.9 F)
1947	n/a
1948	-3.9 C (25.0 F)
1949	-7.2 C (19.0 F)
1950	-2.8 C (27.0 F)
1951	-7.2 C (19.0 F)
1952	0.6 C (33.1 F)
1953	-1.1 C (30.0 F)
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a

Wettest day (Rx1day)

The wettest day of the year at Rockport Marine Lab, 1901 to 1958. The record is 253.0 mm (10.0 in) in 1954, marked on the chart; the median year is 86.4 mm (3.4 in).

Wettest day (Rx1day) at Rockport Marine Lab by year
Year	Wettest day (Rx1day)
1901	38.1 mm (1.5 in)
1902	81.3 mm (3.2 in)
1903	123.2 mm (4.9 in)
1904	120.7 mm (4.8 in)
1905	128.3 mm (5.1 in)
1906	58.4 mm (2.3 in)
1907	50.8 mm (2.0 in)
1910	12.7 mm (0.5 in)
1911	52.1 mm (2.1 in)
1912	73.7 mm (2.9 in)
1913	88.9 mm (3.5 in)
1914	231.1 mm (9.1 in)
1915	160.0 mm (6.3 in)
1916	66.0 mm (2.6 in)
1917	38.1 mm (1.5 in)
1947	48.3 mm (1.9 in)
1948	132.1 mm (5.2 in)
1949	195.6 mm (7.7 in)
1950	86.4 mm (3.4 in)
1951	215.9 mm (8.5 in)
1952	72.4 mm (2.9 in)
1953	127.0 mm (5.0 in)
1954	253.0 mm (10.0 in)
1955	132.1 mm (5.2 in)
1956	54.4 mm (2.1 in)
1957	78.7 mm (3.1 in)
1958	135.9 mm (5.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rockport Marine Lab, 1901 to 1958. The record is 409.3 mm (16.1 in) in 1951, marked on the chart; the median year is 144.7 mm (5.7 in).

Wettest five days (Rx5day) at Rockport Marine Lab by year
Year	Wettest five days (Rx5day)
1901	53.1 mm (2.1 in)
1902	156.7 mm (6.2 in)
1903	259.3 mm (10.2 in)
1904	136.4 mm (5.4 in)
1905	303.6 mm (12.0 in)
1906	81.3 mm (3.2 in)
1907	50.8 mm (2.0 in)
1910	17.6 mm (0.7 in)
1911	77.5 mm (3.1 in)
1912	73.7 mm (2.9 in)
1913	114.3 mm (4.5 in)
1914	299.7 mm (11.8 in)
1915	161.0 mm (6.3 in)
1916	144.7 mm (5.7 in)
1917	38.1 mm (1.5 in)
1947	67.1 mm (2.6 in)
1948	203.2 mm (8.0 in)
1949	254.6 mm (10.0 in)
1950	92.8 mm (3.7 in)
1951	409.3 mm (16.1 in)
1952	72.9 mm (2.9 in)
1953	289.3 mm (11.4 in)
1954	266.2 mm (10.5 in)
1955	231.4 mm (9.1 in)
1956	94.2 mm (3.7 in)
1957	157.2 mm (6.2 in)
1958	153.7 mm (6.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rockport Marine Lab, 1901 to 1958. The record is 66 days in 1905, marked on the chart; the median year is 45 days.

Longest dry spell (CDD) at Rockport Marine Lab by year
Year	Longest dry spell (CDD)
1901	58 days
1902	63 days
1903	39 days
1904	45 days
1905	66 days
1906	36 days
1907	54 days
1910	12 days
1911	35 days
1912	46 days
1913	42 days
1914	27 days
1915	38 days
1916	60 days
1917	49 days
1947	20 days
1948	44 days
1949	39 days
1950	58 days
1951	54 days
1952	49 days
1953	31 days
1954	61 days
1955	64 days
1956	37 days
1957	52 days
1958	44 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 Rockport Marine Lab standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Rockport Marine Lab 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).