Dalecarlia Rsvr Weather Records (USC00182325)

Record envelope, standing records and threshold days for Dalecarlia Rsvr (USC00182325), Maryland, United States, with 79 years of record.

Key Facts for Dalecarlia Rsvr

Dalecarlia Rsvr (USC00182325) is a weather station in Maryland, United States at 38.94 latitude and -77.11 longitude, 46 m (150 ft) above sea level.
The station reports from 1948 to 2026, 79 years of record.
1,464 records set at Dalecarlia Rsvr still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Dalecarlia Rsvr set a daily record precipitation of 88.1 mm (3.5 in) on 3 August 2026.

About the Station

Location: Maryland, United States, 38.94 latitude, -77.11 longitude.
Elevation: 46 m (150 ft).
Period of record: 1948 to 2026, 79 years.
Eligible elements: tmax, tmin, 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 Dalecarlia Rsvr. 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 Dalecarlia Rsvr, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	26.1 C (79.0 F)	-23.9 C (-11.0 F)	13.9 C (57.0 F)	-4.4 C (24.1 F)
Feb	27.8 C (82.0 F)	-18.3 C (-0.9 F)	n/a	n/a
Mar	32.8 C (91.0 F)	-15.0 C (5.0 F)	10.0 C (50.0 F)	5.6 C (42.1 F)
Apr	35.0 C (95.0 F)	-8.3 C (17.1 F)	n/a	n/a
May	36.7 C (98.1 F)	-5.0 C (23.0 F)	n/a	n/a
Jun	37.8 C (100.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	5.6 C (42.1 F)	n/a	n/a
Aug	40.6 C (105.1 F)	5.0 C (41.0 F)	n/a	n/a
Sep	37.2 C (99.0 F)	-0.6 C (30.9 F)	n/a	n/a
Oct	35.0 C (95.0 F)	-8.9 C (16.0 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-13.3 C (8.1 F)	n/a	n/a
Dec	27.8 C (82.0 F)	-18.9 C (-2.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Dalecarlia Rsvr still stand. 1992 holds the most, with 75.

Standing records at Dalecarlia Rsvr by the year they were set
Year set	Standing records
1948	5
1949	15
1950	26
1951	19
1952	13
1953	13
1954	19
1955	16
1956	21
1957	23
1958	16
1959	15
1960	21
1961	20
1962	12
1963	26
1964	17
1965	14
1966	18
1967	19
1968	13
1969	8
1970	15
1971	22
1972	13
1973	9
1974	15
1975	14
1976	25
1977	15
1978	9
1979	26
1980	12
1981	16
1982	16
1983	22
1984	32
1985	29
1986	24
1987	17
1988	39
1989	37
1990	31
1991	37
1992	75
1993	22
1994	14
1995	8
1996	22
1997	22
1998	44
1999	29
2000	31
2001	16
2002	27
2003	4
2004	13
2005	8
2006	16
2007	25
2008	7
2009	12
2010	22
2011	23
2012	20
2013	14
2014	23
2015	25
2016	13
2017	24
2018	18
2019	8
2020	6
2021	6
2022	9
2023	2
2024	12

All-Time Record Progression

11 new records

11 all-time records were set at Dalecarlia Rsvr between 19 February 1979 and 6 February 2010. Each dot is a new record.

When Dalecarlia Rsvr set new all-time records
Date	Kind	Detail
1979-02-19	Record daily snowfall	Record daily snowfall 40.6 cm (16.0 in)
1979-02-19	Record snow depth	Record snow depth 61.0 cm (24.0 in)
1982-01-11	Record low minimum temperature	Record low minimum temperature -20.6 C (-5.1 F)
1982-01-17	Record low minimum temperature	Record low minimum temperature -21.7 C (-7.1 F)
1983-02-11	Record daily snowfall	Record daily snowfall 46.2 cm (18.2 in)
1985-01-20	Record low minimum temperature	Record low minimum temperature -23.3 C (-9.9 F)
1985-01-21	Record low minimum temperature	Record low minimum temperature -23.9 C (-11.0 F)
1994-01-19	Record low maximum temperature	Record low maximum temperature -12.8 C (9.0 F)
1997-08-17	Record high maximum temperature	Record high maximum temperature 40.6 C (105.1 F)
1999-08-17	Record high minimum temperature	Record high minimum temperature 30.6 C (87.1 F)
2010-02-06	Record daily snowfall	Record daily snowfall 50.8 cm (20.0 in)

Wettest Day of Each Month

Jun: 150.4 mm (5.9 in)

The wettest day on record for each calendar month at Dalecarlia Rsvr. The most was 150.4 mm (5.9 in) on 22 June 1972.

Record daily precipitation for each month at Dalecarlia Rsvr
Month	Record daily precipitation (mm)	Date
Jan	88.9 mm (3.5 in)	8 January 1999
Feb	74.2 mm (2.9 in)	22 February 2003
Mar	132.1 mm (5.2 in)	9 March 1999
Apr	79.5 mm (3.1 in)	14 April 1970
May	79.8 mm (3.1 in)	6 May 1989
Jun	150.4 mm (5.9 in)	22 June 1972
Jul	128.0 mm (5.0 in)	25 July 1991
Aug	136.1 mm (5.4 in)	11 August 2001
Sep	139.7 mm (5.5 in)	14 September 1966
Oct	147.3 mm (5.8 in)	8 October 2005
Nov	113.0 mm (4.4 in)	28 November 1993
Dec	109.5 mm (4.3 in)	24 December 1994

Period of Record Coverage

1948 to 2026

79 years of record at Dalecarlia Rsvr, 1948 to 2026. 14 years have data for under 90 percent of days and are left out of rankings: 1948, 1964, 1968, 1995, 2000, 2003, 2004, 2018 and others.

Days with data per year at Dalecarlia Rsvr
Year	Days with data	Share of year	Complete
1948	142	39%	No
1949	329	90%	Yes
1950	345	95%	Yes
1951	355	97%	Yes
1952	361	99%	Yes
1953	361	99%	Yes
1954	363	99%	Yes
1955	360	99%	Yes
1956	355	97%	Yes
1957	363	99%	Yes
1958	362	99%	Yes
1959	362	99%	Yes
1960	365	100%	Yes
1961	356	98%	Yes
1962	352	96%	Yes
1963	357	98%	Yes
1964	300	82%	No
1965	352	96%	Yes
1966	343	94%	Yes
1967	363	99%	Yes
1968	327	89%	No
1969	335	92%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	364	99%	Yes
1973	337	92%	Yes
1974	364	100%	Yes
1975	364	100%	Yes
1976	364	99%	Yes
1977	362	99%	Yes
1978	364	100%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	363	99%	Yes
1982	361	99%	Yes
1983	359	98%	Yes
1984	332	91%	Yes
1985	358	98%	Yes
1986	362	99%	Yes
1987	362	99%	Yes
1988	359	98%	Yes
1989	354	97%	Yes
1990	360	99%	Yes
1991	361	99%	Yes
1992	352	96%	Yes
1993	355	97%	Yes
1994	359	98%	Yes
1995	326	89%	No
1996	354	97%	Yes
1997	332	91%	Yes
1998	351	96%	Yes
1999	356	98%	Yes
2000	326	89%	No
2001	353	97%	Yes
2002	359	98%	Yes
2003	303	83%	No
2004	323	88%	No
2005	359	98%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	364	100%	Yes
2012	366	100%	Yes
2013	357	98%	Yes
2014	356	98%	Yes
2015	348	95%	Yes
2016	352	96%	Yes
2017	345	95%	Yes
2018	284	78%	No
2019	349	96%	Yes
2020	335	92%	Yes
2021	312	85%	No
2022	323	88%	No
2023	312	85%	No
2024	249	68%	No
2025	98	27%	No
2026	2	1%	No

Latest Records

Latest records at Dalecarlia Rsvr
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 August 2026	Dalecarlia Rsvr, US	daily rain	88.1 mm (3.5 in)	44.9 mm (1.8 in)	61 years	51 of 100 (Notable)
24 May 2026	Dalecarlia Rsvr, US	daily rain	37.8 mm (1.5 in)	11.1 mm (0.4 in)	12 years	19 of 100 (Routine)
13 March 2026	Dalecarlia Rsvr, US	daily snow depth (Tie)	2.5 cm (1.0 in)	tie	45 years	5 of 100 (Routine)
13 March 2026	Dalecarlia Rsvr, US	daily snowfall (Tie)	3.0 cm (1.2 in)	tie	4 years	2 of 100 (Routine)
20 February 2026	Dalecarlia Rsvr, US	daily rain	36.6 mm (1.4 in)	16.0 mm (0.6 in)	56 years	40 of 100 (Notable)
26 January 2026	Dalecarlia Rsvr, US	daily rain	40.6 mm (1.6 in)	13.9 mm (0.5 in)	48 years	35 of 100 (Notable)
11 January 2026	Dalecarlia Rsvr, US	daily rain	22.9 mm (0.9 in)	2.6 mm (0.10 in)	60 years	20 of 100 (Routine)
9 November 2024	Dalecarlia Rsvr, US	daily high max	28.3 C (82.9 F)	1.1 C (2.0 F)	30 years	18 of 100 (Routine)
8 November 2024	Dalecarlia Rsvr, US	daily high max	28.3 C (82.9 F)	1.6 C (2.9 F)	49 years	23 of 100 (Routine)
28 September 2024	Dalecarlia Rsvr, US	daily high min	21.7 C (71.1 F)	0.6 C (1.1 F)	17 years	13 of 100 (Routine)
27 September 2024	Dalecarlia Rsvr, US	daily high min	21.1 C (70.0 F)	0.5 C (0.9 F)	52 years	23 of 100 (Routine)
31 August 2024	Dalecarlia Rsvr, US	daily low max	22.8 C (73.0 F)	0.5 C (0.9 F)	25 years	15 of 100 (Routine)
17 July 2024	Dalecarlia Rsvr, US	daily high min	25.0 C (77.0 F)	0.6 C (1.1 F)	33 years	17 of 100 (Routine)
6 July 2024	Dalecarlia Rsvr, US	daily high min (Tie)	25.6 C (78.1 F)	tie	6 years	2 of 100 (Routine)
24 June 2024	Dalecarlia Rsvr, US	daily high min	25.6 C (78.1 F)	1.7 C (3.1 F)	13 years	14 of 100 (Routine)
24 June 2024	Dalecarlia Rsvr, US	daily high max (Tie)	35.6 C (96.1 F)	tie	27 years	3 of 100 (Routine)
23 June 2024	Dalecarlia Rsvr, US	daily high min	26.7 C (80.1 F)	0.6 C (1.1 F)	73 years	29 of 100 (Routine)
23 June 2024	Dalecarlia Rsvr, US	daily high max	37.2 C (99.0 F)	0.5 C (0.9 F)	36 years	18 of 100 (Routine)
7 May 2024	Dalecarlia Rsvr, US	daily high min	18.9 C (66.0 F)	0.6 C (1.1 F)	48 years	22 of 100 (Routine)
1 May 2024	Dalecarlia Rsvr, US	daily high max	32.2 C (90.0 F)	1.1 C (2.0 F)	50 years	24 of 100 (Routine)

Climate Trend

62 complete years, 1949 to 2023

One stripe for each of 62 complete years at Dalecarlia Rsvr, 1949 to 2023. Blue stripes are years cooler than the station's own mean of 13.6 C (56.5 F); red stripes are warmer. The coolest year was 1992, at 10.9 C (51.6 F), and the warmest was 1998, at 15.9 C (60.7 F). The strongest colour marks a difference of 2.8 C (5.0 F).

Annual mean temperature at Dalecarlia Rsvr as warming stripes, 1949 to 2023
Year	Annual mean temperature	Difference from the station mean
1949	14.7 C	+1.06 C
1950	13.4 C	-0.17 C
1951	13.6 C	+0.02 C
1952	13.9 C	+0.32 C
1953	14.4 C	+0.78 C
1954	13.6 C	-0.03 C
1955	13.5 C	-0.13 C
1956	13.4 C	-0.24 C
1957	13.9 C	+0.28 C
1958	12.1 C	-1.47 C
1959	14.1 C	+0.44 C
1960	12.8 C	-0.83 C
1961	13.1 C	-0.56 C
1962	12.7 C	-0.94 C
1963	12.6 C	-1.04 C
1965	13.3 C	-0.29 C
1967	12.8 C	-0.86 C
1970	13.5 C	-0.07 C
1971	13.9 C	+0.30 C
1972	13.5 C	-0.14 C
1974	13.9 C	+0.26 C
1975	14.0 C	+0.35 C
1976	13.2 C	-0.45 C
1977	13.5 C	-0.15 C
1979	13.0 C	-0.65 C
1980	13.3 C	-0.29 C
1981	12.9 C	-0.68 C
1982	13.2 C	-0.45 C
1983	13.6 C	-0.02 C
1985	14.2 C	+0.60 C
1986	13.8 C	+0.17 C
1987	14.3 C	+0.64 C
1988	12.7 C	-0.90 C
1989	12.2 C	-1.43 C
1990	13.8 C	+0.21 C
1991	13.5 C	-0.08 C
1992	10.9 C	-2.74 C
1993	13.0 C	-0.60 C
1994	13.2 C	-0.44 C
1996	12.8 C	-0.86 C
1997	13.8 C	+0.15 C
1998	15.9 C	+2.32 C
1999	15.2 C	+1.56 C
2001	14.5 C	+0.86 C
2002	15.1 C	+1.47 C
2005	13.6 C	+0.03 C
2006	14.7 C	+1.13 C
2007	13.8 C	+0.23 C
2008	13.4 C	-0.21 C
2009	13.1 C	-0.53 C
2010	14.0 C	+0.34 C
2011	14.3 C	+0.67 C
2012	14.7 C	+1.08 C
2013	13.3 C	-0.34 C
2014	12.6 C	-1.02 C
2015	13.5 C	-0.12 C
2016	14.1 C	+0.47 C
2017	14.3 C	+0.68 C
2019	14.5 C	+0.89 C
2021	14.3 C	+0.67 C
2022	13.4 C	-0.20 C
2023	14.7 C	+1.09 C

The fitted trend in annual mean temperature here over 1949 to 2023 is 0.09 C (0.00 to 0.18) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.16 F (-0.01 to 0.32) per decade. The slope is a straight line fitted to 62 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Dalecarlia Rsvr
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.09 C (0.00 to 0.18) per decade	0.16 F (-0.01 to 0.32) per decade	1949 to 2023	62	Not clearly different from zero
Mean daily maximum	0.04 C (-0.05 to 0.14) per decade	0.1 F (-0.1 to 0.3) per decade	1949 to 2023	62	Not clearly different from zero
Mean daily minimum	0.13 C (0.00 to 0.27) per decade	0.24 F (0.00 to 0.48) per decade	1949 to 2023	62	Not clearly different from zero

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

1948 to 2026

Yearly extremes at Dalecarlia Rsvr: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	1997	36.7 C (98.1 F)	79
Coldest night (TNn)	-23.9 C (-11.0 F)	1985	-14.4 C (6.1 F)	79
Wettest day (Rx1day)	150.4 mm (5.9 in)	1972	70.6 mm (2.8 in)	79
Wettest five days (Rx5day)	295.4 mm (11.6 in)	2006	109.5 mm (4.3 in)	79
Longest dry spell (CDD)	35 days	2002	18 days	79

Hottest day (TXx)

The hottest day of the year at Dalecarlia Rsvr, 1948 to 2026. The record is 40.6 C (105.1 F) in 1997, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Dalecarlia Rsvr by year
Year	Hottest day (TXx)
1948	37.8 C (100.0 F)
1949	36.7 C (98.1 F)
1950	34.4 C (93.9 F)
1951	35.0 C (95.0 F)
1952	37.2 C (99.0 F)
1953	37.8 C (100.0 F)
1954	39.4 C (102.9 F)
1955	37.8 C (100.0 F)
1956	35.6 C (96.1 F)
1957	38.3 C (100.9 F)
1958	34.4 C (93.9 F)
1959	36.7 C (98.1 F)
1960	33.9 C (93.0 F)
1961	35.6 C (96.1 F)
1962	36.7 C (98.1 F)
1963	35.6 C (96.1 F)
1964	36.7 C (98.1 F)
1965	35.0 C (95.0 F)
1966	37.8 C (100.0 F)
1967	33.9 C (93.0 F)
1968	36.1 C (97.0 F)
1969	35.6 C (96.1 F)
1970	35.0 C (95.0 F)
1971	35.6 C (96.1 F)
1972	35.0 C (95.0 F)
1973	35.6 C (96.1 F)
1974	35.0 C (95.0 F)
1975	35.6 C (96.1 F)
1976	34.4 C (93.9 F)
1977	37.2 C (99.0 F)
1978	36.7 C (98.1 F)
1979	35.0 C (95.0 F)
1980	38.9 C (102.0 F)
1981	35.6 C (96.1 F)
1982	35.6 C (96.1 F)
1983	39.4 C (102.9 F)
1984	37.2 C (99.0 F)
1985	37.2 C (99.0 F)
1986	36.7 C (98.1 F)
1987	37.8 C (100.0 F)
1988	39.4 C (102.9 F)
1989	35.0 C (95.0 F)
1990	37.2 C (99.0 F)
1991	38.3 C (100.9 F)
1992	36.7 C (98.1 F)
1993	37.2 C (99.0 F)
1994	37.8 C (100.0 F)
1995	37.8 C (100.0 F)
1996	36.7 C (98.1 F)
1997	40.6 C (105.1 F)
1998	36.7 C (98.1 F)
1999	38.9 C (102.0 F)
2000	37.2 C (99.0 F)
2001	37.8 C (100.0 F)
2002	38.3 C (100.9 F)
2003	35.0 C (95.0 F)
2004	35.0 C (95.0 F)
2005	37.8 C (100.0 F)
2006	38.9 C (102.0 F)
2007	40.0 C (104.0 F)
2008	37.2 C (99.0 F)
2009	35.6 C (96.1 F)
2010	38.9 C (102.0 F)
2011	39.4 C (102.9 F)
2012	38.9 C (102.0 F)
2013	36.7 C (98.1 F)
2014	36.1 C (97.0 F)
2015	35.0 C (95.0 F)
2016	37.8 C (100.0 F)
2017	36.1 C (97.0 F)
2018	35.6 C (96.1 F)
2019	36.7 C (98.1 F)
2020	37.2 C (99.0 F)
2021	36.7 C (98.1 F)
2022	36.1 C (97.0 F)
2023	36.1 C (97.0 F)
2024	38.3 C (100.9 F)
2025	36.7 C (98.1 F)
2026	13.9 C (57.0 F)

Coldest night (TNn)

The coldest night of the year at Dalecarlia Rsvr, 1948 to 2026. The record is -23.9 C (-11.0 F) in 1985, marked on the chart; the median year is -14.4 C (6.1 F).

Coldest night (TNn) at Dalecarlia Rsvr by year
Year	Coldest night (TNn)
1948	-12.2 C (10.0 F)
1949	-9.4 C (15.1 F)
1950	-11.7 C (10.9 F)
1951	-15.6 C (3.9 F)
1952	-11.1 C (12.0 F)
1953	-10.6 C (12.9 F)
1954	-13.9 C (7.0 F)
1955	-14.4 C (6.1 F)
1956	-12.2 C (10.0 F)
1957	-18.3 C (-0.9 F)
1958	-16.7 C (1.9 F)
1959	-16.7 C (1.9 F)
1960	-17.8 C (0.0 F)
1961	-17.2 C (1.0 F)
1962	-14.4 C (6.1 F)
1963	-17.2 C (1.0 F)
1964	-15.0 C (5.0 F)
1965	-16.1 C (3.0 F)
1966	-16.7 C (1.9 F)
1967	-15.0 C (5.0 F)
1968	-17.2 C (1.0 F)
1969	-13.3 C (8.1 F)
1970	-20.0 C (-4.0 F)
1971	-12.8 C (9.0 F)
1972	-17.2 C (1.0 F)
1973	-12.2 C (10.0 F)
1974	-10.0 C (14.0 F)
1975	-10.6 C (12.9 F)
1976	-15.6 C (3.9 F)
1977	-16.7 C (1.9 F)
1978	-13.3 C (8.1 F)
1979	-18.3 C (-0.9 F)
1980	-15.0 C (5.0 F)
1981	-17.2 C (1.0 F)
1982	-21.7 C (-7.1 F)
1983	-18.3 C (-0.9 F)
1984	-19.4 C (-2.9 F)
1985	-23.9 C (-11.0 F)
1986	-12.8 C (9.0 F)
1987	-17.2 C (1.0 F)
1988	-17.8 C (0.0 F)
1989	-18.9 C (-2.0 F)
1990	-15.0 C (5.0 F)
1991	-14.4 C (6.1 F)
1992	-16.7 C (1.9 F)
1993	-14.4 C (6.1 F)
1994	-22.2 C (-8.0 F)
1995	-16.1 C (3.0 F)
1996	-15.6 C (3.9 F)
1997	-15.6 C (3.9 F)
1998	-8.9 C (16.0 F)
1999	-12.8 C (9.0 F)
2000	-12.2 C (10.0 F)
2001	-11.1 C (12.0 F)
2002	-12.2 C (10.0 F)
2003	-13.3 C (8.1 F)
2004	-15.0 C (5.0 F)
2005	-15.0 C (5.0 F)
2006	-11.1 C (12.0 F)
2007	-16.1 C (3.0 F)
2008	-11.7 C (10.9 F)
2009	-15.0 C (5.0 F)
2010	-10.6 C (12.9 F)
2011	-11.7 C (10.9 F)
2012	-10.0 C (14.0 F)
2013	-9.4 C (15.1 F)
2014	-16.1 C (3.0 F)
2015	-16.7 C (1.9 F)
2016	-12.2 C (10.0 F)
2017	-11.1 C (12.0 F)
2018	-15.6 C (3.9 F)
2019	-13.3 C (8.1 F)
2020	-6.7 C (19.9 F)
2021	-6.7 C (19.9 F)
2022	-12.2 C (10.0 F)
2023	-10.0 C (14.0 F)
2024	-10.0 C (14.0 F)
2025	-13.3 C (8.1 F)
2026	-4.4 C (24.1 F)

Wettest day (Rx1day)

The wettest day of the year at Dalecarlia Rsvr, 1948 to 2026. The record is 150.4 mm (5.9 in) in 1972, marked on the chart; the median year is 70.6 mm (2.8 in).

Wettest day (Rx1day) at Dalecarlia Rsvr by year
Year	Wettest day (Rx1day)
1948	68.1 mm (2.7 in)
1949	46.2 mm (1.8 in)
1950	51.1 mm (2.0 in)
1951	67.6 mm (2.7 in)
1952	67.3 mm (2.6 in)
1953	50.0 mm (2.0 in)
1954	48.5 mm (1.9 in)
1955	97.0 mm (3.8 in)
1956	85.6 mm (3.4 in)
1957	74.4 mm (2.9 in)
1958	65.3 mm (2.6 in)
1959	60.5 mm (2.4 in)
1960	63.5 mm (2.5 in)
1961	65.5 mm (2.6 in)
1962	43.2 mm (1.7 in)
1963	61.5 mm (2.4 in)
1964	50.8 mm (2.0 in)
1965	99.1 mm (3.9 in)
1966	139.7 mm (5.5 in)
1967	75.2 mm (3.0 in)
1968	57.7 mm (2.3 in)
1969	93.0 mm (3.7 in)
1970	79.8 mm (3.1 in)
1971	87.6 mm (3.4 in)
1972	150.4 mm (5.9 in)
1973	72.4 mm (2.9 in)
1974	59.7 mm (2.4 in)
1975	120.4 mm (4.7 in)
1976	68.8 mm (2.7 in)
1977	59.9 mm (2.4 in)
1978	59.7 mm (2.4 in)
1979	80.5 mm (3.2 in)
1980	50.5 mm (2.0 in)
1981	58.2 mm (2.3 in)
1982	68.6 mm (2.7 in)
1983	56.6 mm (2.2 in)
1984	43.9 mm (1.7 in)
1985	95.5 mm (3.8 in)
1986	114.3 mm (4.5 in)
1987	91.9 mm (3.6 in)
1988	37.8 mm (1.5 in)
1989	79.8 mm (3.1 in)
1990	105.2 mm (4.1 in)
1991	128.0 mm (5.0 in)
1992	48.3 mm (1.9 in)
1993	113.0 mm (4.4 in)
1994	109.5 mm (4.3 in)
1995	55.9 mm (2.2 in)
1996	61.0 mm (2.4 in)
1997	58.4 mm (2.3 in)
1998	50.0 mm (2.0 in)
1999	132.1 mm (5.2 in)
2000	51.3 mm (2.0 in)
2001	136.1 mm (5.4 in)
2002	49.3 mm (1.9 in)
2003	78.5 mm (3.1 in)
2004	109.2 mm (4.3 in)
2005	147.3 mm (5.8 in)
2006	145.5 mm (5.7 in)
2007	61.0 mm (2.4 in)
2008	138.2 mm (5.4 in)
2009	94.0 mm (3.7 in)
2010	57.2 mm (2.3 in)
2011	86.4 mm (3.4 in)
2012	117.1 mm (4.6 in)
2013	70.6 mm (2.8 in)
2014	121.9 mm (4.8 in)
2015	51.3 mm (2.0 in)
2016	55.4 mm (2.2 in)
2017	81.3 mm (3.2 in)
2018	114.8 mm (4.5 in)
2019	76.7 mm (3.0 in)
2020	79.0 mm (3.1 in)
2021	73.7 mm (2.9 in)
2022	57.2 mm (2.3 in)
2023	62.2 mm (2.4 in)
2024	71.1 mm (2.8 in)
2025	19.1 mm (0.8 in)
2026	88.1 mm (3.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Dalecarlia Rsvr, 1948 to 2026. The record is 295.4 mm (11.6 in) in 2006, marked on the chart; the median year is 109.5 mm (4.3 in).

Wettest five days (Rx5day) at Dalecarlia Rsvr by year
Year	Wettest five days (Rx5day)
1948	118.1 mm (4.6 in)
1949	73.4 mm (2.9 in)
1950	109.5 mm (4.3 in)
1951	126.1 mm (5.0 in)
1952	146.1 mm (5.8 in)
1953	98.3 mm (3.9 in)
1954	61.5 mm (2.4 in)
1955	160.3 mm (6.3 in)
1956	117.8 mm (4.6 in)
1957	100.1 mm (3.9 in)
1958	103.6 mm (4.1 in)
1959	62.1 mm (2.4 in)
1960	97.8 mm (3.9 in)
1961	109.5 mm (4.3 in)
1962	49.5 mm (1.9 in)
1963	100.4 mm (4.0 in)
1964	86.9 mm (3.4 in)
1965	122.5 mm (4.8 in)
1966	152.9 mm (6.0 in)
1967	156.7 mm (6.2 in)
1968	84.1 mm (3.3 in)
1969	100.6 mm (4.0 in)
1970	89.7 mm (3.5 in)
1971	103.4 mm (4.1 in)
1972	240.0 mm (9.4 in)
1973	85.4 mm (3.4 in)
1974	85.0 mm (3.3 in)
1975	245.1 mm (9.6 in)
1976	104.0 mm (4.1 in)
1977	100.8 mm (4.0 in)
1978	84.3 mm (3.3 in)
1979	138.2 mm (5.4 in)
1980	66.0 mm (2.6 in)
1981	87.6 mm (3.4 in)
1982	75.0 mm (3.0 in)
1983	79.5 mm (3.1 in)
1984	107.2 mm (4.2 in)
1985	103.4 mm (4.1 in)
1986	132.3 mm (5.2 in)
1987	116.3 mm (4.6 in)
1988	55.6 mm (2.2 in)
1989	121.7 mm (4.8 in)
1990	156.7 mm (6.2 in)
1991	155.5 mm (6.1 in)
1992	114.9 mm (4.5 in)
1993	127.0 mm (5.0 in)
1994	122.2 mm (4.8 in)
1995	56.4 mm (2.2 in)
1996	85.6 mm (3.4 in)
1997	97.5 mm (3.8 in)
1998	85.0 mm (3.3 in)
1999	140.5 mm (5.5 in)
2000	72.7 mm (2.9 in)
2001	180.6 mm (7.1 in)
2002	94.8 mm (3.7 in)
2003	123.8 mm (4.9 in)
2004	142.9 mm (5.6 in)
2005	208.6 mm (8.2 in)
2006	295.4 mm (11.6 in)
2007	121.4 mm (4.8 in)
2008	149.7 mm (5.9 in)
2009	139.8 mm (5.5 in)
2010	124.5 mm (4.9 in)
2011	220.3 mm (8.7 in)
2012	157.8 mm (6.2 in)
2013	187.9 mm (7.4 in)
2014	124.4 mm (4.9 in)
2015	99.1 mm (3.9 in)
2016	80.3 mm (3.2 in)
2017	108.0 mm (4.3 in)
2018	214.9 mm (8.5 in)
2019	125.0 mm (4.9 in)
2020	88.9 mm (3.5 in)
2021	142.5 mm (5.6 in)
2022	81.3 mm (3.2 in)
2023	64.9 mm (2.6 in)
2024	114.3 mm (4.5 in)
2025	21.6 mm (0.9 in)
2026	126.2 mm (5.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Dalecarlia Rsvr, 1948 to 2026. The record is 35 days in 2002, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Dalecarlia Rsvr by year
Year	Longest dry spell (CDD)
1948	15 days
1949	18 days
1950	21 days
1951	22 days
1952	20 days
1953	20 days
1954	17 days
1955	19 days
1956	16 days
1957	20 days
1958	20 days
1959	14 days
1960	18 days
1961	15 days
1962	24 days
1963	26 days
1964	27 days
1965	24 days
1966	15 days
1967	20 days
1968	25 days
1969	16 days
1970	15 days
1971	12 days
1972	12 days
1973	26 days
1974	19 days
1975	12 days
1976	16 days
1977	29 days
1978	19 days
1979	17 days
1980	17 days
1981	17 days
1982	16 days
1983	14 days
1984	14 days
1985	23 days
1986	21 days
1987	21 days
1988	24 days
1989	21 days
1990	19 days
1991	22 days
1992	17 days
1993	20 days
1994	23 days
1995	32 days
1996	13 days
1997	12 days
1998	24 days
1999	23 days
2000	22 days
2001	19 days
2002	35 days
2003	10 days
2004	16 days
2005	17 days
2006	31 days
2007	15 days
2008	22 days
2009	21 days
2010	20 days
2011	24 days
2012	16 days
2013	15 days
2014	12 days
2015	11 days
2016	14 days
2017	24 days
2018	11 days
2019	17 days
2020	13 days
2021	13 days
2022	17 days
2023	18 days
2024	13 days
2025	11 days
2026	20 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

62 years with a frost

Across 62 years with a frost, the median last spring frost at Dalecarlia Rsvr falls on 11 April and the median first autumn frost on 29 October, which leaves a median of 199 days between them.

In 1988 to 2023 the median growing season was 206 days. That is 9 days more than in 1949 to 1985.

Fitted over all years, the growing season changes by +2.3 days per decade at this station.

Frost dates and growing season at Dalecarlia Rsvr
Measure	Median, all years	Earliest period (1949 to 1985)	Recent period (1988 to 2023)	Recent against earliest	Fitted trend
Last spring frost	11 April	12 April	10 April	2 days earlier	-1.2 days per decade
First autumn frost	29 October	28 October	2 November	5 days later	+1.1 days per decade
Growing days	199 days	197 days	206 days	9 days more	+2.3 days per decade

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

71 years, 1949 to 2022

A day with at least 72.7 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 192.2 mm (7.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Dalecarlia Rsvr: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	72.7 mm (2.9 in)
5 years	99.7 mm (3.9 in)
10 years	119.4 mm (4.7 in)
25 years	146.6 mm (5.8 in)
50 years	168.7 mm (6.6 in)
100 years	192.2 mm (7.6 in)	Longer than the 71 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, 71 years of values from 1949 to 2022.

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: 150.4 mm (5.9 in) in 1972; 147.3 mm (5.8 in) in 2005; 145.5 mm (5.7 in) in 2006.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2007 to 2023 against 1961 to 1990

Over 2007 to 2023, Dalecarlia Rsvr had a mean temperature of 13.9 C (56.9 F) and 1,175.9 mm (46.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Bentonville 4 S (United States, 1,531 km away), Vienna (United States, 123 km away) and Mtn Home C of Eng (United States, 1,374 km away).

Climate twins of Dalecarlia Rsvr: stations whose 1961 to 1990 climate is closest to its 2007 to 2023 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Bentonville 4 S	United States	1,531 km (951 mi)	13.7 C (56.6 F)	1,138.2 mm (44.8 in)	0.73
Vienna	United States	123 km (76 mi)	13.9 C (57.0 F)	1,095.2 mm (43.1 in)	0.76
Mtn Home C of Eng	United States	1,374 km (854 mi)	13.7 C (56.7 F)	1,098.5 mm (43.2 in)	0.78

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Dalecarlia Rsvr standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Dalecarlia Rsvr 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).