Armstrong Weather Records (USC00410342)

Record envelope, standing records and threshold days for Armstrong (USC00410342), Texas, United States, with 37 years of record.

Key Facts for Armstrong

Armstrong (USC00410342) is a weather station in Texas, United States at 26.93 latitude and -97.80 longitude, 9 m (30 ft) above sea level.
The station reports from 1942 to 1978, 37 years of record.
1,464 records set at Armstrong still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.

About the Station

Location: Texas, United States, 26.93 latitude, -97.80 longitude.
Elevation: 9 m (30 ft).
Period of record: 1942 to 1978, 37 years.
Eligible elements: prcp, snow, snwd.

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 Armstrong. 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 Armstrong, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	33.9 C (93.0 F)	-10.0 C (14.0 F)	n/a	n/a
Feb	33.3 C (91.9 F)	-6.7 C (19.9 F)	n/a	n/a
Mar	38.3 C (100.9 F)	-5.6 C (21.9 F)	n/a	n/a
Apr	41.7 C (107.1 F)	1.7 C (35.1 F)	n/a	n/a
May	40.6 C (105.1 F)	5.0 C (41.0 F)	n/a	n/a
Jun	43.3 C (109.9 F)	12.8 C (55.0 F)	n/a	n/a
Jul	40.6 C (105.1 F)	15.6 C (60.1 F)	n/a	n/a
Aug	42.2 C (108.0 F)	13.9 C (57.0 F)	n/a	n/a
Sep	39.4 C (102.9 F)	10.0 C (50.0 F)	n/a	n/a
Oct	37.2 C (99.0 F)	3.3 C (37.9 F)	n/a	n/a
Nov	36.7 C (98.1 F)	-5.0 C (23.0 F)	n/a	n/a
Dec	35.0 C (95.0 F)	-9.4 C (15.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Armstrong still stand. 1974 holds the most, with 119.

Standing records at Armstrong by the year they were set
Year set	Standing records
1958	73
1959	33
1960	52
1961	30
1962	37
1963	90
1964	114
1965	105
1966	80
1967	73
1968	42
1969	67
1970	98
1971	77
1972	67
1973	81
1974	119
1975	65
1976	79
1977	63
1978	19

Wettest Day of Each Month

Sep: 177.8 mm (7.0 in)

The wettest day on record for each calendar month at Armstrong. The most was 177.8 mm (7.0 in) on 14 September 1951.

Record daily precipitation for each month at Armstrong
Month	Record daily precipitation (mm)	Date
Jan	50.8 mm (2.0 in)	22 January 1975
Feb	68.6 mm (2.7 in)	6 February 1967
Mar	66.0 mm (2.6 in)	10 March 1944
Apr	114.3 mm (4.5 in)	4 April 1971
May	152.4 mm (6.0 in)	13 May 1969
Jun	76.2 mm (3.0 in)	20 June 1966
Jul	55.9 mm (2.2 in)	11 July 1968
Aug	94.0 mm (3.7 in)	31 August 1975
Sep	177.8 mm (7.0 in)	14 September 1951
Oct	121.9 mm (4.8 in)	5 October 1969
Nov	39.4 mm (1.6 in)	28 November 1976
Dec	102.9 mm (4.1 in)	7 December 1967

Period of Record Coverage

1958 to 1978

21 years of record at Armstrong, 1958 to 1978. 9 years have data for under 90 percent of days and are left out of rankings: 1958, 1959, 1960, 1961, 1962, 1967, 1968, 1977 and others.

Days with data per year at Armstrong
Year	Days with data	Share of year	Complete
1958	269	74%	No
1959	197	54%	No
1960	203	55%	No
1961	200	55%	No
1962	131	36%	No
1963	354	97%	Yes
1964	349	95%	Yes
1965	343	94%	Yes
1966	329	90%	Yes
1967	258	71%	No
1968	327	89%	No
1969	345	95%	Yes
1970	357	98%	Yes
1971	365	100%	Yes
1972	365	100%	Yes
1973	362	99%	Yes
1974	360	99%	Yes
1975	354	97%	Yes
1976	352	96%	Yes
1977	221	61%	No
1978	166	45%	No

Latest Records

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

Climate Trend

11 complete years, 1964 to 1975

One stripe for each of 11 complete years at Armstrong, 1964 to 1975. Blue stripes are years cooler than the station's own mean of 22.3 C (72.2 F); red stripes are warmer. The coolest year was 1970, at 21.6 C (70.9 F), and the warmest was 1965, at 23.1 C (73.5 F). The strongest colour marks a difference of 0.8 C (1.4 F).

Annual mean temperature at Armstrong as warming stripes, 1964 to 1975
Year	Annual mean temperature	Difference from the station mean
1964	22.9 C	+0.56 C
1965	23.1 C	+0.74 C
1966	22.1 C	-0.23 C
1968	21.9 C	-0.42 C
1969	22.4 C	+0.09 C
1970	21.6 C	-0.69 C
1971	23.1 C	+0.73 C
1972	22.3 C	+0.01 C
1973	21.9 C	-0.46 C
1974	22.1 C	-0.25 C
1975	22.2 C	-0.09 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

1942 to 1978

Yearly extremes at Armstrong: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	1963	40.0 C (104.0 F)	21
Coldest night (TNn)	-10.0 C (14.0 F)	1975	-5.0 C (23.0 F)	21
Wettest day (Rx1day)	177.8 mm (7.0 in)	1951	68.1 mm (2.7 in)	34
Wettest five days (Rx5day)	267.4 mm (10.5 in)	1951	122.5 mm (4.8 in)	34
Longest dry spell (CDD)	88 days	1970	37 days	34

Hottest day (TXx)

The hottest day of the year at Armstrong, 1942 to 1978. The record is 43.3 C (109.9 F) in 1963, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at Armstrong by year
Year	Hottest day (TXx)
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
1958	41.7 C (107.1 F)
1959	37.8 C (100.0 F)
1960	39.4 C (102.9 F)
1961	38.9 C (102.0 F)
1962	42.2 C (108.0 F)
1963	43.3 C (109.9 F)
1964	40.0 C (104.0 F)
1965	38.9 C (102.0 F)
1966	38.9 C (102.0 F)
1967	40.0 C (104.0 F)
1968	40.0 C (104.0 F)
1969	40.0 C (104.0 F)
1970	41.1 C (106.0 F)
1971	38.3 C (100.9 F)
1972	40.6 C (105.1 F)
1973	40.0 C (104.0 F)
1974	40.6 C (105.1 F)
1975	37.2 C (99.0 F)
1976	36.7 C (98.1 F)
1977	40.0 C (104.0 F)
1978	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at Armstrong, 1942 to 1978. The record is -10.0 C (14.0 F) in 1975, marked on the chart; the median year is -5.0 C (23.0 F).

Coldest night (TNn) at Armstrong by year
Year	Coldest night (TNn)
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
1958	-5.0 C (23.0 F)
1959	-2.8 C (27.0 F)
1960	-5.0 C (23.0 F)
1961	3.9 C (39.0 F)
1962	1.1 C (34.0 F)
1963	-5.6 C (21.9 F)
1964	-4.4 C (24.1 F)
1965	-5.6 C (21.9 F)
1966	-7.2 C (19.0 F)
1967	-7.8 C (18.0 F)
1968	-5.0 C (23.0 F)
1969	-5.6 C (21.9 F)
1970	-7.8 C (18.0 F)
1971	-5.0 C (23.0 F)
1972	-3.9 C (25.0 F)
1973	-9.4 C (15.1 F)
1974	-5.0 C (23.0 F)
1975	-10.0 C (14.0 F)
1976	-3.9 C (25.0 F)
1977	-0.6 C (30.9 F)
1978	10.0 C (50.0 F)

Wettest day (Rx1day)

The wettest day of the year at Armstrong, 1942 to 1978. The record is 177.8 mm (7.0 in) in 1951, marked on the chart; the median year is 68.1 mm (2.7 in).

Wettest day (Rx1day) at Armstrong by year
Year	Wettest day (Rx1day)
1942	41.7 mm (1.6 in)
1943	47.0 mm (1.9 in)
1944	87.6 mm (3.4 in)
1945	75.4 mm (3.0 in)
1946	51.3 mm (2.0 in)
1947	49.5 mm (1.9 in)
1948	101.6 mm (4.0 in)
1949	62.5 mm (2.5 in)
1950	56.6 mm (2.2 in)
1951	177.8 mm (7.0 in)
1952	96.5 mm (3.8 in)
1953	55.1 mm (2.2 in)
1954	56.9 mm (2.2 in)
1958	106.2 mm (4.2 in)
1959	71.6 mm (2.8 in)
1960	54.6 mm (2.1 in)
1961	59.7 mm (2.4 in)
1962	115.8 mm (4.6 in)
1963	35.6 mm (1.4 in)
1964	57.7 mm (2.3 in)
1965	114.3 mm (4.5 in)
1966	76.2 mm (3.0 in)
1967	102.9 mm (4.1 in)
1968	55.9 mm (2.2 in)
1969	152.4 mm (6.0 in)
1970	86.4 mm (3.4 in)
1971	114.3 mm (4.5 in)
1972	71.1 mm (2.8 in)
1973	61.0 mm (2.4 in)
1974	115.6 mm (4.6 in)
1975	94.0 mm (3.7 in)
1976	45.7 mm (1.8 in)
1977	65.0 mm (2.6 in)
1978	38.1 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Armstrong, 1942 to 1978. The record is 267.4 mm (10.5 in) in 1951, marked on the chart; the median year is 122.5 mm (4.8 in).

Wettest five days (Rx5day) at Armstrong by year
Year	Wettest five days (Rx5day)
1942	66.3 mm (2.6 in)
1943	85.6 mm (3.4 in)
1944	164.8 mm (6.5 in)
1945	129.4 mm (5.1 in)
1946	75.0 mm (3.0 in)
1947	50.0 mm (2.0 in)
1948	239.2 mm (9.4 in)
1949	85.1 mm (3.4 in)
1950	56.6 mm (2.2 in)
1951	267.4 mm (10.5 in)
1952	134.6 mm (5.3 in)
1953	131.5 mm (5.2 in)
1954	63.3 mm (2.5 in)
1958	183.7 mm (7.2 in)
1959	110.5 mm (4.4 in)
1960	54.6 mm (2.1 in)
1961	145.8 mm (5.7 in)
1962	128.5 mm (5.1 in)
1963	67.1 mm (2.6 in)
1964	143.1 mm (5.6 in)
1965	199.1 mm (7.8 in)
1966	123.2 mm (4.9 in)
1967	106.4 mm (4.2 in)
1968	102.7 mm (4.0 in)
1969	214.7 mm (8.5 in)
1970	99.1 mm (3.9 in)
1971	243.4 mm (9.6 in)
1972	132.0 mm (5.2 in)
1973	151.1 mm (5.9 in)
1974	221.0 mm (8.7 in)
1975	121.7 mm (4.8 in)
1976	95.0 mm (3.7 in)
1977	71.6 mm (2.8 in)
1978	65.8 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Armstrong, 1942 to 1978. The record is 88 days in 1970, marked on the chart; the median year is 37 days.

Longest dry spell (CDD) at Armstrong by year
Year	Longest dry spell (CDD)
1942	29 days
1943	36 days
1944	43 days
1945	53 days
1946	55 days
1947	49 days
1948	37 days
1949	57 days
1950	59 days
1951	42 days
1952	13 days
1953	46 days
1954	34 days
1958	47 days
1959	29 days
1960	33 days
1961	42 days
1962	24 days
1963	70 days
1964	35 days
1965	39 days
1966	50 days
1967	50 days
1968	20 days
1969	32 days
1970	88 days
1971	33 days
1972	25 days
1973	31 days
1974	37 days
1975	37 days
1976	35 days
1977	25 days
1978	51 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 Armstrong standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Armstrong 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).