Middle River climate — normals and trends

Q: What is the climate of Middle River?

Middle River has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.1 °C and it receives 1,149 mm of precipitation per year.

Q: What is the hottest day ever recorded in Middle River?

The hottest day measured in Middle River between 1940 and 2025 was 22 July 2011, reaching 36.1 °C.

Q: What is the coldest day in Middle River?

The coldest day measured in Middle River between 1940 and 2025 was 19 January 1994, at -20.9 °C.

Q: Does it snow in Middle River?

Yes. Middle River gets on average 43.1 cm of snow per year and has around 58 frost days.

Q: Has the climate of Middle River warmed?

Yes: Middle River warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Middle River?

The wettest day measured in Middle River between 1940 and 2025 was 14 September 1966, with 144 mm of rain in 24 hours.

Q: What was the windiest day in Middle River?

The windiest day measured in Middle River between 1940 and 2025 was 15 October 1954, with winds reaching 64.2 km/h.

Q: What is the warmest month in Middle River?

The warmest month in Middle River is July (25.0 °C on average); the coldest is January (1.1 °C).

Q: How much does it rain in Middle River?

Middle River receives on average 1,149 mm of precipitation per year, spread over about 119 rainy days.

Q: Is it sunny in Middle River?

Middle River gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.

Middle River (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.1 °C and it receives 1,149 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is July (25.0 °C on average) and the coldest is January (1.1 °C). Rainfall peaks in March.

Middle River averages 58 frost days, 18 hot days (≥ 30 °C) and 119 rainy days per year.

Middle River has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.

The number of frost days there went from about 67 to 49 per year over the period.

The hottest day of the period reached 36.1 °C (on 22 July 2011) and the coldest -20.9 °C (on 19 January 1994).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

Middle RiverMaryland

coords: 39.33°, -76.44°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthMarchDriest monthFebruary

Mean daily temperature

13.1°C

Average daily high

16.6°C

Average daily low

9.9°C

Annual rainfall

1,149mm

Sunshine / day

9.0h

Mean relative humidity

70%

Average peak wind

19.7km/h

Seasonal range

23.9°C

Frost days (< 0 °C)

58 d/yr

Hot days (≥ 30 °C)

18 d/yr

Rainy days (≥ 1 mm)

119 d/yr

Annual snowfall

43.1 cm

Average feels-like high

15.4 °C

Average feels-like low

7.5 °C

Average peak gust

34.7 km/h

Tropical nights (≥ 20 °C)

69 d/yr

Solar radiation

14.9 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.38 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

36.1 °C

22 July 2011

Coldest day

-20.9 °C

19 January 1994

Wettest day

144 mm

14 September 1966

Windiest day

64.2 km/h

15 October 1954

Strongest gust

116.6 km/h

9 January 2024

Hottest feels-like

43.0 °C

22 July 2011

Coldest feels-like

-28.7 °C

19 January 1994

Snowiest day

35.5 cm

20 March 1958

Sunniest day

14.2 h

4 July 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	34.3 °C24 June 2025	-10.9 °C22 January 2025	13.7 °C	1,191 mm	21	60
2024	35.3 °C16 July 2024	-10.7 °C22 January 2024	14.6 °C	1,220 mm	31	44
2023	33.5 °C4 September 2023	-8.6 °C4 February 2023	14.8 °C	1,130 mm	22	20
2022	33.0 °C9 August 2022	-13.0 °C24 December 2022	13.8 °C	1,439 mm	23	64
2021	32.8 °C30 June 2021	-4.8 °C8 February 2021	14.6 °C	1,123 mm	30	43
2020	35.2 °C20 July 2020	-6.7 °C15 February 2020	14.7 °C	1,441 mm	35	26
2019	34.6 °C21 July 2019	-13.6 °C31 January 2019	14.4 °C	1,259 mm	44	51
2018	32.2 °C2 July 2018	-13.0 °C7 January 2018	13.9 °C	1,806 mm	29	50
2017	32.8 °C20 July 2017	-9.9 °C9 January 2017	14.5 °C	1,126 mm	24	46
2016	34.3 °C14 August 2016	-11.3 °C14 February 2016	14.2 °C	1,144 mm	40	47
2015	32.3 °C23 June 2015	-16.1 °C20 February 2015	13.8 °C	1,103 mm	28	62
2014	32.2 °C18 June 2014	-15.0 °C7 January 2014	12.6 °C	1,113 mm	10	77
2013	33.7 °C19 July 2013	-9.6 °C23 January 2013	13.4 °C	1,141 mm	19	54
2012	36.1 °C7 July 2012	-9.0 °C4 January 2012	14.9 °C	939 mm	40	23
2011	36.1 °C22 July 2011	-9.6 °C24 January 2011	14.1 °C	1,364 mm	34	54
2010	35.0 °C6 July 2010	-10.1 °C31 January 2010	13.8 °C	1,072 mm	42	69
2009	32.5 °C10 August 2009	-13.5 °C17 January 2009	13.0 °C	1,395 mm	6	71
2008	33.2 °C10 June 2008	-9.2 °C11 February 2008	13.4 °C	1,140 mm	20	53
2007	33.8 °C8 August 2007	-12.1 °C6 February 2007	13.7 °C	963 mm	22	51
2006	34.4 °C3 August 2006	-9.7 °C19 February 2006	14.2 °C	1,174 mm	28	37
2005	33.9 °C27 July 2005	-11.9 °C24 January 2005	13.4 °C	1,092 mm	24	66
2004	30.4 °C5 July 2004	-13.1 °C10 January 2004	13.2 °C	1,218 mm	1	62
2003	31.1 °C5 July 2003	-12.1 °C18 January 2003	12.5 °C	1,467 mm	12	74
2002	34.0 °C2 August 2002	-7.5 °C7 December 2002	14.1 °C	1,038 mm	36	49
2001	32.9 °C9 August 2001	-7.5 °C22 January 2001	13.6 °C	936 mm	11	49
2000	30.8 °C10 July 2000	-11.7 °C22 January 2000	12.8 °C	1,000 mm	4	66
1999	34.5 °C5 July 1999	-8.7 °C6 January 1999	13.7 °C	1,096 mm	31	50
1998	32.7 °C22 July 1998	-6.7 °C1 January 1998	14.5 °C	1,092 mm	23	31
1997	33.9 °C15 July 1997	-13.2 °C19 January 1997	13.0 °C	986 mm	22	45
1996	29.9 °C23 August 1996	-16.2 °C5 February 1996	12.3 °C	1,573 mm	0	64
1995	34.7 °C15 July 1995	-14.1 °C6 February 1995	13.3 °C	1,114 mm	35	58
1994	32.7 °C8 July 1994	-20.9 °C19 January 1994	13.2 °C	1,129 mm	11	54
1993	34.1 °C10 July 1993	-12.3 °C19 February 1993	13.2 °C	1,243 mm	31	58
1992	33.0 °C14 July 1992	-9.3 °C19 January 1992	12.5 °C	1,113 mm	9	57
1991	34.2 °C23 July 1991	-7.7 °C22 January 1991	14.1 °C	983 mm	29	44
1990	33.8 °C4 July 1990	-10.1 °C26 February 1990	14.1 °C	1,116 mm	12	32
1989	32.7 °C11 July 1989	-13.6 °C22 December 1989	12.6 °C	1,445 mm	12	77
1988	35.1 °C16 July 1988	-11.9 °C15 January 1988	12.8 °C	926 mm	36	63
1987	34.5 °C21 July 1987	-12.5 °C28 January 1987	13.2 °C	1,002 mm	26	56
1986	33.1 °C7 July 1986	-11.0 °C28 January 1986	13.2 °C	1,035 mm	20	62
1985	32.7 °C14 August 1985	-20.1 °C21 January 1985	13.2 °C	1,009 mm	12	69
1984	31.0 °C7 August 1984	-17.5 °C22 January 1984	12.9 °C	1,231 mm	7	57
1983	34.6 °C16 July 1983	-16.4 °C25 December 1983	13.2 °C	1,416 mm	33	46
1982	32.0 °C19 July 1982	-20.5 °C17 January 1982	12.6 °C	1,129 mm	7	66
1981	32.5 °C9 July 1981	-13.7 °C12 January 1981	12.4 °C	900 mm	13	72
1980	33.2 °C16 July 1980	-12.8 °C25 December 1980	12.8 °C	939 mm	30	67
1979	32.5 °C10 August 1979	-18.0 °C18 February 1979	12.7 °C	1,307 mm	13	63
1978	33.2 °C23 July 1978	-11.3 °C10 January 1978	12.4 °C	1,309 mm	18	75
1977	33.1 °C21 July 1977	-17.1 °C17 January 1977	13.0 °C	1,100 mm	19	66
1976	30.9 °C23 August 1976	-11.8 °C19 January 1976	12.6 °C	980 mm	9	71
1975	32.2 °C2 August 1975	-7.6 °C19 December 1975	13.4 °C	1,356 mm	11	48
1974	31.7 °C9 July 1974	-7.3 °C5 February 1974	13.3 °C	1,038 mm	10	41
1973	34.7 °C28 August 1973	-12.5 °C17 February 1973	13.6 °C	1,183 mm	20	50
1972	32.8 °C21 July 1972	-14.6 °C16 January 1972	12.5 °C	1,391 mm	9	62
1971	31.0 °C8 July 1971	-12.6 °C2 February 1971	13.1 °C	1,277 mm	7	59
1970	31.9 °C4 September 1970	-15.2 °C9 January 1970	12.7 °C	990 mm	15	75
1969	32.1 °C18 July 1969	-9.4 °C5 January 1969	12.4 °C	1,113 mm	7	82
1968	33.1 °C25 August 1968	-14.5 °C12 January 1968	12.4 °C	991 mm	22	74
1967	30.9 °C24 July 1967	-12.9 °C8 February 1967	11.9 °C	1,132 mm	2	66
1966	33.7 °C3 July 1966	-14.1 °C29 January 1966	12.1 °C	1,109 mm	23	73
1965	31.3 °C25 July 1965	-12.9 °C15 January 1965	12.4 °C	744 mm	13	72
1964	31.8 °C30 June 1964	-13.2 °C15 January 1964	12.6 °C	1,104 mm	14	74
1963	31.7 °C19 July 1963	-16.4 °C29 January 1963	12.0 °C	942 mm	13	74
1962	33.9 °C20 August 1962	-15.7 °C11 February 1962	12.2 °C	1,105 mm	12	71
1961	31.5 °C29 August 1961	-16.8 °C2 February 1961	12.6 °C	1,201 mm	21	58
1960	31.2 °C23 July 1960	-14.5 °C23 December 1960	12.3 °C	1,104 mm	5	83
1959	33.4 °C29 June 1959	-10.8 °C20 February 1959	13.3 °C	1,022 mm	16	66
1958	31.3 °C31 July 1958	-15.0 °C17 February 1958	12.1 °C	1,305 mm	8	62
1957	34.9 °C21 July 1957	-13.7 °C18 January 1957	13.2 °C	1,082 mm	24	43
1956	32.0 °C2 July 1956	-7.2 °C28 January 1956	12.6 °C	1,278 mm	5	56
1955	32.9 °C22 July 1955	-14.7 °C3 February 1955	12.8 °C	1,043 mm	23	71
1954	34.9 °C31 July 1954	-14.9 °C18 January 1954	13.2 °C	893 mm	22	56
1953	34.1 °C31 August 1953	-6.5 °C18 December 1953	13.8 °C	1,065 mm	27	40
1952	33.7 °C26 June 1952	-10.3 °C30 January 1952	13.1 °C	1,487 mm	20	48
1951	31.6 °C27 July 1951	-11.3 °C16 December 1951	12.9 °C	1,087 mm	6	60
1950	30.6 °C1 August 1950	-10.7 °C27 December 1950	12.7 °C	1,141 mm	6	57
1949	34.3 °C10 August 1949	-5.7 °C12 February 1949	14.1 °C	999 mm	23	41
1948	33.7 °C26 August 1948	-14.9 °C31 January 1948	12.8 °C	1,348 mm	11	64
1947	31.1 °C14 August 1947	-12.1 °C5 February 1947	12.6 °C	1,057 mm	7	74
1946	30.3 °C19 July 1946	-9.3 °C23 January 1946	13.3 °C	1,017 mm	3	47
1945	32.2 °C30 June 1945	-13.8 °C25 January 1945	12.8 °C	1,304 mm	7	60
1944	32.3 °C30 July 1944	-8.5 °C9 January 1944	13.0 °C	1,221 mm	22	64
1943	32.1 °C14 August 1943	-13.9 °C15 February 1943	12.6 °C	890 mm	24	74
1942	32.7 °C19 July 1942	-13.7 °C11 January 1942	12.8 °C	1,396 mm	5	61
1941	33.2 °C28 July 1941	-9.4 °C18 March 1941	12.9 °C	908 mm	9	81
1940	32.9 °C26 July 1940	-13.0 °C20 January 1940	12.0 °C	1,239 mm	11	72

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

17.0 °C

+0.4 °C

Hot days (≥ 30 °C)

21 d/yr

Frost days (< 0 °C)

60 d/yr

Annual rainfall

1191 mm

+42 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	2.3 °C	-1.9 °C	47 mm	-45 mm
Feb	5.6 °C	+0.1 °C	94 mm	+8 mm
Mar	13.4 °C	+3.7 °C	76 mm	-32 mm
Apr	17.6 °C	+2.1 °C	86 mm	-13 mm
May	21.7 °C	+1.0 °C	194 mm	+94 mm
Jun	27.1 °C	+1.5 °C	109 mm	+22 mm
Jul	29.8 °C	+1.4 °C	245 mm	+146 mm
Aug	26.1 °C	-1.6 °C	33 mm	-63 mm
Sep	24.5 °C	+0.2 °C	101 mm	+1 mm
Oct	18.4 °C	0.0 °C	93 mm	+3 mm
Nov	12.4 °C	+0.2 °C	50 mm	-45 mm
Dec	4.8 °C	-1.8 °C	65 mm	-35 mm

The year's extremes

Hottest day

34.3 °C

24 Jun 2025

Coldest day

-10.9 °C

22 Jan 2025

Wettest day

56.3 mm

30 Oct 2025

Windiest day

42.2 km/h

16 Feb 2025

Strongest gust

79.9 km/h

16 Feb 2025

Hottest feels-like

41.4 °C

24 Jun 2025

Coldest feels-like

-17.2 °C

22 Jan 2025

Snowiest day

12.8 cm

6 Jan 2025

Sunniest day

14.2 h

4 Jul 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Middle River?

Middle River has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.1 °C and it receives 1,149 mm of precipitation per year.

What is the hottest day ever recorded in Middle River?

The hottest day measured in Middle River between 1940 and 2025 was 22 July 2011, reaching 36.1 °C.

What is the coldest day in Middle River?

The coldest day measured in Middle River between 1940 and 2025 was 19 January 1994, at -20.9 °C.

Does it snow in Middle River?

Yes. Middle River gets on average 43.1 cm of snow per year and has around 58 frost days.

Has the climate of Middle River warmed?

Yes: Middle River warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Middle River?

The wettest day measured in Middle River between 1940 and 2025 was 14 September 1966, with 144 mm of rain in 24 hours.

What was the windiest day in Middle River?

The windiest day measured in Middle River between 1940 and 2025 was 15 October 1954, with winds reaching 64.2 km/h.

What is the warmest month in Middle River?

The warmest month in Middle River is July (25.0 °C on average); the coldest is January (1.1 °C).

How much does it rain in Middle River?

Middle River receives on average 1,149 mm of precipitation per year, spread over about 119 rainy days.

Is it sunny in Middle River?

Middle River gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.

What is the biggest single-day snowfall in Middle River?

The heaviest 24-hour snowfall measured in Middle River between 1940 and 2025 was 20 March 1958, with 35.5 cm.

Are there tropical nights in Middle River?

Yes: Middle River has on average 69 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Middle River?

In Middle River, between 1940 and 2025, the highest apparent temperature reached 43.0 °C on 22 July 2011, and the lowest was -28.7 °C on 19 January 1994.

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