Hiram 2 S Weather Records (USC00173800)

Record envelope, standing records and threshold days for Hiram 2 S (USC00173800), Maine, United States, with 41 years of record.

Key Facts for Hiram 2 S

Hiram 2 S (USC00173800) is a weather station in Maine, United States at 43.85 latitude and -70.80 longitude, 88 m (289 ft) above sea level.
The station reports from 1925 to 1965, 41 years of record.
1,464 records set at Hiram 2 S still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Hiram 2 S set a daily record precipitation of 55.6 mm (2.2 in) on 25 February 1965.

About the Station

Location: Maine, United States, 43.85 latitude, -70.80 longitude.
Elevation: 88 m (289 ft).
Period of record: 1925 to 1965, 41 years.
Eligible elements: prcp.

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 Hiram 2 S. 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 Hiram 2 S, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	14.4 C (57.9 F)	-37.2 C (-35.0 F)	n/a	n/a
Feb	17.8 C (64.0 F)	-36.7 C (-34.1 F)	n/a	n/a
Mar	36.7 C (98.1 F)	-26.7 C (-16.1 F)	n/a	n/a
Apr	35.6 C (96.1 F)	-15.6 C (3.9 F)	n/a	n/a
May	36.7 C (98.1 F)	-6.7 C (19.9 F)	n/a	n/a
Jun	39.4 C (102.9 F)	0.0 C (32.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	3.3 C (37.9 F)	n/a	n/a
Aug	40.0 C (104.0 F)	2.2 C (36.0 F)	n/a	n/a
Sep	39.4 C (102.9 F)	-8.9 C (16.0 F)	n/a	n/a
Oct	32.8 C (91.0 F)	-10.0 C (14.0 F)	n/a	n/a
Nov	27.2 C (81.0 F)	-17.8 C (0.0 F)	n/a	n/a
Dec	16.7 C (62.1 F)	-36.1 C (-33.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Hiram 2 S still stand. 1946 holds the most, with 75.

Standing records at Hiram 2 S by the year they were set
Year set	Standing records
1925	3
1926	32
1927	24
1928	33
1929	14
1930	21
1931	5
1932	43
1933	44
1934	57
1935	39
1936	53
1937	51
1938	52
1939	42
1940	50
1941	57
1942	46
1943	46
1944	32
1945	60
1946	75
1947	55
1948	22
1953	29
1954	52
1955	34
1956	50
1957	48
1958	49
1959	41
1960	25
1961	41
1962	40
1963	39
1964	45
1965	15

Wettest Day of Each Month

Jun: 152.9 mm (6.0 in)

The wettest day on record for each calendar month at Hiram 2 S. The most was 152.9 mm (6.0 in) on 15 June 1942.

Record daily precipitation for each month at Hiram 2 S
Month	Record daily precipitation (mm)	Date
Jan	55.1 mm (2.2 in)	3 January 1936
Feb	79.2 mm (3.1 in)	19 February 1960
Mar	78.7 mm (3.1 in)	16 March 1937
Apr	55.6 mm (2.2 in)	12 April 1932
May	83.1 mm (3.3 in)	9 May 1954
Jun	152.9 mm (6.0 in)	15 June 1942
Jul	60.5 mm (2.4 in)	29 July 1947
Aug	88.6 mm (3.5 in)	31 August 1954
Sep	132.8 mm (5.2 in)	11 September 1954
Oct	89.2 mm (3.5 in)	6 October 1962
Nov	127.0 mm (5.0 in)	14 November 1937
Dec	74.4 mm (2.9 in)	12 December 1952

Period of Record Coverage

1925 to 1965

37 years of record at Hiram 2 S, 1925 to 1965. 11 years have data for under 90 percent of days and are left out of rankings: 1925, 1926, 1927, 1928, 1929, 1930, 1931, 1946 and others.

Days with data per year at Hiram 2 S
Year	Days with data	Share of year	Complete
1925	24	7%	No
1926	82	22%	No
1927	86	24%	No
1928	138	38%	No
1929	28	8%	No
1930	136	37%	No
1931	58	16%	No
1932	365	100%	Yes
1933	362	99%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	353	96%	Yes
1937	364	100%	Yes
1938	333	91%	Yes
1939	333	91%	Yes
1940	366	100%	Yes
1941	364	100%	Yes
1942	365	100%	Yes
1943	363	99%	Yes
1944	334	91%	Yes
1945	365	100%	Yes
1946	297	81%	No
1947	362	99%	Yes
1948	151	41%	No
1953	153	42%	No
1954	365	100%	Yes
1955	363	99%	Yes
1956	364	99%	Yes
1957	363	99%	Yes
1958	334	92%	Yes
1959	360	99%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	363	99%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	133	36%	No

Latest Records

Latest records at Hiram 2 S
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 February 1965	Hiram 2 S, US	daily rain	55.6 mm (2.2 in)	24.9 mm (1.0 in)	4 years	29 of 100 (Routine)
4 December 1964	Hiram 2 S, US	daily rain	27.2 mm (1.1 in)	10.4 mm (0.4 in)	9 years	14 of 100 (Routine)
22 August 1964	Hiram 2 S, US	daily rain	20.3 mm (0.8 in)	10.6 mm (0.4 in)	28 years	19 of 100 (Routine)
24 June 1964	Hiram 2 S, US	daily rain	20.8 mm (0.8 in)	1.0 mm (0.04 in)	14 years	8 of 100 (Routine)
21 January 1964	Hiram 2 S, US	daily rain	42.9 mm (1.7 in)	12.4 mm (0.5 in)	4 years	17 of 100 (Routine)
8 November 1963	Hiram 2 S, US	daily rain	57.4 mm (2.3 in)	35.6 mm (1.4 in)	16 years	31 of 100 (Routine)
7 November 1963	Hiram 2 S, US	daily rain	114.6 mm (4.5 in)	73.5 mm (2.9 in)	12 years	46 of 100 (Notable)
29 September 1963	Hiram 2 S, US	daily rain	42.4 mm (1.7 in)	27.7 mm (1.1 in)	18 years	24 of 100 (Routine)
18 May 1963	Hiram 2 S, US	daily rain	26.9 mm (1.1 in)	13.9 mm (0.5 in)	9 years	18 of 100 (Routine)
12 February 1963	Hiram 2 S, US	daily rain	16.5 mm (0.6 in)	4.3 mm (0.17 in)	19 years	12 of 100 (Routine)
2 February 1963	Hiram 2 S, US	daily rain	19.6 mm (0.8 in)	4.4 mm (0.17 in)	7 years	9 of 100 (Routine)
22 December 1962	Hiram 2 S, US	daily rain	20.8 mm (0.8 in)	12.4 mm (0.5 in)	31 years	20 of 100 (Routine)
6 December 1962	Hiram 2 S, US	daily rain	51.8 mm (2.0 in)	13.7 mm (0.5 in)	24 years	21 of 100 (Routine)
7 October 1962	Hiram 2 S, US	daily rain	43.9 mm (1.7 in)	10.9 mm (0.4 in)	36 years	22 of 100 (Routine)
6 October 1962	Hiram 2 S, US	monthly rain	89.2 mm (3.5 in)	26.7 mm (1.1 in)	28 years	44 of 100 (Notable)
5 October 1962	Hiram 2 S, US	daily rain	16.5 mm (0.6 in)	8.1 mm (0.32 in)	28 years	18 of 100 (Routine)
8 August 1962	Hiram 2 S, US	daily rain	37.6 mm (1.5 in)	19.1 mm (0.8 in)	16 years	20 of 100 (Routine)
24 May 1962	Hiram 2 S, US	daily rain	56.4 mm (2.2 in)	17.3 mm (0.7 in)	1 year	20 of 100 (Routine)
30 April 1962	Hiram 2 S, US	daily rain	26.2 mm (1.0 in)	7.4 mm (0.29 in)	13 years	14 of 100 (Routine)
24 February 1962	Hiram 2 S, US	daily rain	23.1 mm (0.9 in)	18.3 mm (0.7 in)	27 years	20 of 100 (Routine)

Climate Trend

21 complete years, 1932 to 1964

One stripe for each of 21 complete years at Hiram 2 S, 1932 to 1964. Blue stripes are years cooler than the station's own mean of 7.5 C (45.4 F); red stripes are warmer. The coolest year was 1962, at 5.6 C (42.2 F), and the warmest was 1937, at 9.0 C (48.2 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Hiram 2 S as warming stripes, 1932 to 1964
Year	Annual mean temperature	Difference from the station mean
1932	8.6 C	+1.16 C
1933	8.3 C	+0.79 C
1934	7.8 C	+0.36 C
1935	8.1 C	+0.66 C
1937	9.0 C	+1.54 C
1940	7.5 C	+0.01 C
1941	8.7 C	+1.21 C
1942	8.7 C	+1.20 C
1943	7.5 C	+0.07 C
1945	8.6 C	+1.14 C
1947	6.8 C	-0.68 C
1954	6.9 C	-0.61 C
1955	7.0 C	-0.44 C
1956	6.2 C	-1.22 C
1957	7.2 C	-0.22 C
1959	7.1 C	-0.40 C
1960	7.1 C	-0.37 C
1961	7.1 C	-0.37 C
1962	5.6 C	-1.82 C
1963	6.3 C	-1.14 C
1964	6.6 C	-0.87 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

1925 to 1965

Yearly extremes at Hiram 2 S: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1937	35.6 C (96.1 F)	37
Coldest night (TNn)	-37.2 C (-35.0 F)	1957	-27.8 C (-18.0 F)	37
Wettest day (Rx1day)	152.9 mm (6.0 in)	1942	61.2 mm (2.4 in)	41
Wettest five days (Rx5day)	196.6 mm (7.7 in)	1963	101.6 mm (4.0 in)	41
Longest dry spell (CDD)	29 days	1927	17 days	41

Hottest day (TXx)

The hottest day of the year at Hiram 2 S, 1925 to 1965. The record is 40.0 C (104.0 F) in 1937, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Hiram 2 S by year
Year	Hottest day (TXx)
1925	17.8 C (64.0 F)
1926	37.2 C (99.0 F)
1927	31.1 C (88.0 F)
1928	25.6 C (78.1 F)
1929	21.1 C (70.0 F)
1930	32.2 C (90.0 F)
1931	11.7 C (53.1 F)
1932	34.4 C (93.9 F)
1933	36.7 C (98.1 F)
1934	34.4 C (93.9 F)
1935	38.9 C (102.0 F)
1936	35.6 C (96.1 F)
1937	40.0 C (104.0 F)
1938	39.4 C (102.9 F)
1939	39.4 C (102.9 F)
1940	40.0 C (104.0 F)
1941	39.4 C (102.9 F)
1942	37.8 C (100.0 F)
1943	36.7 C (98.1 F)
1944	38.9 C (102.0 F)
1945	38.9 C (102.0 F)
1946	38.9 C (102.0 F)
1947	37.8 C (100.0 F)
1948	26.7 C (80.1 F)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	36.1 C (97.0 F)
1954	34.4 C (93.9 F)
1955	36.7 C (98.1 F)
1956	35.6 C (96.1 F)
1957	33.9 C (93.0 F)
1958	34.4 C (93.9 F)
1959	35.0 C (95.0 F)
1960	35.0 C (95.0 F)
1961	33.9 C (93.0 F)
1962	35.0 C (95.0 F)
1963	36.7 C (98.1 F)
1964	35.6 C (96.1 F)
1965	27.2 C (81.0 F)

Coldest night (TNn)

The coldest night of the year at Hiram 2 S, 1925 to 1965. The record is -37.2 C (-35.0 F) in 1957, marked on the chart; the median year is -27.8 C (-18.0 F).

Coldest night (TNn) at Hiram 2 S by year
Year	Coldest night (TNn)
1925	-9.4 C (15.1 F)
1926	-9.4 C (15.1 F)
1927	-6.7 C (19.9 F)
1928	-24.4 C (-11.9 F)
1929	-15.6 C (3.9 F)
1930	-27.8 C (-18.0 F)
1931	-27.2 C (-17.0 F)
1932	-24.4 C (-11.9 F)
1933	-36.1 C (-33.0 F)
1934	-34.4 C (-29.9 F)
1935	-30.6 C (-23.1 F)
1936	-27.2 C (-17.0 F)
1937	-21.7 C (-7.1 F)
1938	-26.1 C (-15.0 F)
1939	-27.8 C (-18.0 F)
1940	-27.2 C (-17.0 F)
1941	-23.9 C (-11.0 F)
1942	-27.2 C (-17.0 F)
1943	-36.7 C (-34.1 F)
1944	-26.1 C (-15.0 F)
1945	-27.2 C (-17.0 F)
1946	-28.3 C (-18.9 F)
1947	-25.6 C (-14.1 F)
1948	-32.8 C (-27.0 F)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	-20.0 C (-4.0 F)
1954	-28.9 C (-20.0 F)
1955	-30.6 C (-23.1 F)
1956	-26.7 C (-16.1 F)
1957	-37.2 C (-35.0 F)
1958	-31.7 C (-25.1 F)
1959	-27.8 C (-18.0 F)
1960	-29.4 C (-20.9 F)
1961	-33.9 C (-29.0 F)
1962	-33.9 C (-29.0 F)
1963	-32.2 C (-26.0 F)
1964	-30.0 C (-22.0 F)
1965	-28.3 C (-18.9 F)

Wettest day (Rx1day)

The wettest day of the year at Hiram 2 S, 1925 to 1965. The record is 152.9 mm (6.0 in) in 1942, marked on the chart; the median year is 61.2 mm (2.4 in).

Wettest day (Rx1day) at Hiram 2 S by year
Year	Wettest day (Rx1day)
1925	51.6 mm (2.0 in)
1926	42.2 mm (1.7 in)
1927	61.0 mm (2.4 in)
1928	38.1 mm (1.5 in)
1929	55.9 mm (2.2 in)
1930	61.0 mm (2.4 in)
1931	45.2 mm (1.8 in)
1932	61.2 mm (2.4 in)
1933	64.0 mm (2.5 in)
1934	66.5 mm (2.6 in)
1935	82.0 mm (3.2 in)
1936	78.2 mm (3.1 in)
1937	127.0 mm (5.0 in)
1938	55.4 mm (2.2 in)
1939	81.3 mm (3.2 in)
1940	39.9 mm (1.6 in)
1941	62.2 mm (2.4 in)
1942	152.9 mm (6.0 in)
1943	59.9 mm (2.4 in)
1944	108.7 mm (4.3 in)
1945	66.8 mm (2.6 in)
1946	104.1 mm (4.1 in)
1947	62.2 mm (2.4 in)
1948	44.2 mm (1.7 in)
1949	45.0 mm (1.8 in)
1950	90.9 mm (3.6 in)
1951	64.0 mm (2.5 in)
1952	74.4 mm (2.9 in)
1953	56.6 mm (2.2 in)
1954	132.8 mm (5.2 in)
1955	44.5 mm (1.8 in)
1956	41.4 mm (1.6 in)
1957	50.8 mm (2.0 in)
1958	54.4 mm (2.1 in)
1959	61.2 mm (2.4 in)
1960	111.5 mm (4.4 in)
1961	47.5 mm (1.9 in)
1962	89.2 mm (3.5 in)
1963	114.6 mm (4.5 in)
1964	65.3 mm (2.6 in)
1965	55.6 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Hiram 2 S, 1925 to 1965. The record is 196.6 mm (7.7 in) in 1963, marked on the chart; the median year is 101.6 mm (4.0 in).

Wettest five days (Rx5day) at Hiram 2 S by year
Year	Wettest five days (Rx5day)
1925	66.1 mm (2.6 in)
1926	76.7 mm (3.0 in)
1927	101.6 mm (4.0 in)
1928	74.7 mm (2.9 in)
1929	83.3 mm (3.3 in)
1930	83.8 mm (3.3 in)
1931	106.3 mm (4.2 in)
1932	115.3 mm (4.5 in)
1933	109.4 mm (4.3 in)
1934	89.7 mm (3.5 in)
1935	94.0 mm (3.7 in)
1936	109.9 mm (4.3 in)
1937	138.7 mm (5.5 in)
1938	97.6 mm (3.8 in)
1939	96.0 mm (3.8 in)
1940	76.0 mm (3.0 in)
1941	63.5 mm (2.5 in)
1942	182.6 mm (7.2 in)
1943	118.1 mm (4.6 in)
1944	182.4 mm (7.2 in)
1945	103.4 mm (4.1 in)
1946	134.8 mm (5.3 in)
1947	92.4 mm (3.6 in)
1948	95.3 mm (3.8 in)
1949	101.9 mm (4.0 in)
1950	124.4 mm (4.9 in)
1951	105.1 mm (4.1 in)
1952	103.1 mm (4.1 in)
1953	116.1 mm (4.6 in)
1954	168.9 mm (6.6 in)
1955	80.9 mm (3.2 in)
1956	131.9 mm (5.2 in)
1957	78.2 mm (3.1 in)
1958	98.4 mm (3.9 in)
1959	92.2 mm (3.6 in)
1960	127.8 mm (5.0 in)
1961	81.5 mm (3.2 in)
1962	152.6 mm (6.0 in)
1963	196.6 mm (7.7 in)
1964	82.9 mm (3.3 in)
1965	63.0 mm (2.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Hiram 2 S, 1925 to 1965. The record is 29 days in 1927, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Hiram 2 S by year
Year	Longest dry spell (CDD)
1925	14 days
1926	15 days
1927	29 days
1928	21 days
1929	18 days
1930	23 days
1931	16 days
1932	14 days
1933	14 days
1934	24 days
1935	19 days
1936	12 days
1937	13 days
1938	18 days
1939	24 days
1940	23 days
1941	22 days
1942	16 days
1943	18 days
1944	25 days
1945	16 days
1946	23 days
1947	28 days
1948	17 days
1949	14 days
1950	17 days
1951	14 days
1952	20 days
1953	15 days
1954	15 days
1955	19 days
1956	15 days
1957	13 days
1958	14 days
1959	17 days
1960	13 days
1961	26 days
1962	12 days
1963	23 days
1964	15 days
1965	17 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.

Frost Dates and Growing Season

21 years with a frost

Across 21 years with a frost, the median last spring frost at Hiram 2 S falls on 13 May and the median first autumn frost on 30 September, which leaves a median of 145 days between them.

Frost dates and growing season at Hiram 2 S
Measure	Median, all years	Earliest period	Recent period (1932 to 1964)	Recent against earliest	Fitted trend
Last spring frost	13 May	n/a	13 May	n/a	n/a
First autumn frost	30 September	n/a	30 September	n/a	n/a
Growing days	145 days	n/a	145 days	n/a	n/a

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

36 years, 1926 to 1964

A day with at least 65.0 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 188.1 mm (7.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Hiram 2 S: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	65.0 mm (2.6 in)
5 years	89.6 mm (3.5 in)
10 years	108.8 mm (4.3 in)
25 years	137.0 mm (5.4 in)
50 years	161.1 mm (6.3 in)	Longer than the 36 years of record
100 years	188.1 mm (7.4 in)	Longer than the 36 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, 36 years of values from 1926 to 1964.

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: 152.9 mm (6.0 in) in 1942; 132.8 mm (5.2 in) in 1954; 127.0 mm (5.0 in) in 1937.

Download the Data

Data for Hiram 2 S standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hiram 2 S 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 2026-10-17 (17 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).