Areas of Extreme Heat and Fire Weather in the Northwest U.S.; Heavy Rain in the West and South-central U.S.

Extreme heat will continue in the interior Northwest into midweek before finally waning. Hot temperatures, dry, gusty winds, and isolated dry thunderstorms will bring critical fire weather. Heavy rain and thunderstorms are expected across portions of the Great Basin, Rockies, and central/southern Plains. An atmospheric river will bring heavy rain and strong winds to southwest Alaska. 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.	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
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	69/2024	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	67/2024	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			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
	Temperature							Degree Days				Precipitation

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Areas of Extreme Heat and Fire Weather in the Northwest U.S.; Heavy Rain in the West and South-central U.S.

Merced December Normals