National Weather Service United States Department of Commerce

Active Weather Pattern for the West into the Plains

A strong Pacific storm continues to track across the Great Basin. Heavy snow is expected across the higher elevations and heavy rain across lower terrain. Strong gusty winds will make for additional hazards for travelers. These winds will bring increasing fire weather concerns for the southern High Plains. Then we will closely watch for severe thunderstorms across the central Plains on Monday. Read More >

Normals, Means & Extremes
December - Merced, CA
Values in red represent the extremes for the month. 

D
a
t
e

Temperature

Degree Days

Precipitation

D
a
t
e

Normal

High Max.

Low Max.

High Min.

Low Min.

Heating
(daily)

Normal
Season
to Date

Cooling
(daily)

Normal
Season
to Date

Daily

Normal
Season to
Date

Record
Maximum

Max.

Min.

Avg.

1

59

37

48

71/2021

43/1972

56/2012

21/1906

17

457

0

1582

0.05

1.71

1.10/2019

1

2

59

37

48

71/1959

41/1972

54/2012

23/1906

17

474

0

1582

0.05

1.76

1.00/1961

2

3

59

37

48

72/1979

43/1963

60/2014

26/2004

17

491

0

1582

0.05

1.81

1.56/1974

3

4

58

37

48

73/1983

41/1963

53/2014

25/2013

18

508

0

1582

0.05

1.86

2.09/1915

4

5

58

37

47

71/1995

41/1963

55/2012

20/1903

18

526

0

1582

0.05

1.91

1.68/1957

5

6

58

36

47

75/1908

41/1963

53/2014

20/1903

18

544

0

1582

0.05

1.96

0.91/1966

6

7

58

36

47

76/1912

43/1965

54/2019

18/1903

18

562

0

1582

0.06

2.02

0.78/1952

7

8

57

36

47

71/2006

42/1965

55/1950

17/1903

18

580

0

1582

0.05

2.07

1.00/1909

8

9

57

36

47

72/1908

40/1972

52/1993

16/1903

19

599

0

1582

0.06

2.13

0.60/1996

9

10

57

36

46

74/1908

36/1972

56/2016

17/1903

19

618

0

1582

0.06

2.19

0.94/1937

10

11

57

36

46

73/1908

41/1932

60/1937

20/1972

19

636

0

1582

0.06

2.25

1.00/1906

11

12

56

36

46

72/1908

39/1932

56/1929

17/1932

19

655

0

1582

0.06

2.31

1.26/2014

12

13

56

36

46

75/1908

40/1932

56/1929

19/1940

19

674

0

1582

0.06

2.37

0.73/1933

13

14

56

36

46

72/1958

35/1972

53/1983

17/1940

19

694

0

1582

0.06

2.43

0.85/1934

14

15

56

36

46

70/1958

37/1972

51/2016

18/1940

19

713

0

1582

0.07

2.50

0.94/1936

15

16

56

36

46

70/1958

38/1963

54/1941

25/2007

19

732

0

1582

0.06

2.56

1.85/1962

16

17

55

36

46

69/1958

40/1963

52/1962

23/1975

20

752

0

1582

0.06

2.62

1.10/1977

17

18

55

36

45

68/1912

41/1963

51/2010

23/1975

20

771

0

1582

0.06

2.68

0.69/1925

18

19

55

36

45

70/1981

38/1985

54/1981

23/1965

20

791

0

1582

0.07

2.75

0.74/1949

19

20

55

36

45

74/1999

38/1985

53/2014

23/1930

20

811

0

1582

0.06

2.81

1.16/1921

20

21

55

36

45

68/1919

35/1998

52/1972

21/1998

20

830

0

1582

0.07

2.88

1.02/1982

21

22

55

36

45

68/1919

36/1998

55/1955

16/1990

20

850

0

1582

0.06

2.94

1.38/1982

22

23

55

36

45

69/1964

36/1985

58/1955

16/1990

20

870

0

1582

0.07

3.01

2.10/1955

23

24

55

36

45

67/1964

36/1985

57/1964

15/1990

20

890

0

1582

0.07

3.08

1.32/1921

24

25

55

36

45

68/1909

36/1985

53/2005

19/1990

20

910

0

1582

0.07

3.15

1.18/1931

25

26

55

36

45

68/1909

37/1985

49/1964

18/1956

20

929

0

1582

0.07

3.22

0.52/1931

26

27

55

36

45

67/1951

37/1985

51/1983

21/1930

20

949

0

1582

0.08

3.30

1.39/1973

27

28

54

36

45

67/2023

37/1985

52/1940

20/1930

20

969

0

1582

0.07

3.37

0.80/1951

28

29

54

36

45

69/2023

41/1929

52/1973

19/1990

20

989

0

1582

0.07

3.44

0.86/1935

29

30

54

36

45

68/1912

40/1937

53/2001

20/1969

20

1009

0

1582

0.07

3.51

0.85/1904

30

31

54

36

45

68/1909

38/1929

56/1996

21/1990

20

1028

0

1582

0.06

3.57

0.70/1952

31

Avg.

56.0

36.0

46.0

 

589

 

0

 

1.91

 

Avg.

D
a
t
e

Max.

Min.

Avg.

High Max.

Low Max.

High Min.

Low Min.

Heating
(daily)

Normal
Season
to Date

Cooling
(daily)

Normal
Season
to Date

Daily

Normal
Season to
Date

Record
Maximum

D
a
t
e

Normal

Temperature

Degree Days

Precipitation