UMATILLA, OREGON

Average Temperature

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		54.1		34.4		39.2		45.9		52.9		60.7		67.8		75		74.2		65.5		54.3		42.9		36

Average High Temperature

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		64.4		40.3		47		55.9		64.1		72.8		80.5		89		87.7		78.3		65.2		50.2		41.7

Average Low Temperature

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		43.7		28.6		31.3		35.9		41.5		48.4		55		61		60.7		52.8		43.3		35.6		30.3

Highest Recorded Temperature

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		111		67		70		79		90		104		106		110		111		103		87		75		68

Lowest Recorded Temperature

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-22		-22		-7		12		29		34		35		43		43		34		20		-2		-9

Average Number of Days Above 100F/38C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.3		---		---		---		---		0.1		0.1		1.5		0.6		---		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36.6		---		---		---		---		1.2		5.1		15.3		13		2		---		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		84.1		---		---		---		0.4		5.9		13.5		25.8		26.2		12		0.3		---		---

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		145.2		---		---		0.6		5.7		17.1		26.8		30.8		30.9		26.2		6.8		0.4		---

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		208.6		0.2		0.9		8.8		20.9		29.3		29.8		31		31		29.8		23.4		3.3		0.2

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		274.6		5.1		10.2		25.4		29.8		31		30		31		31		30		30.4		16.1		4.5

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		325.6		17.2		22.3		30.4		30		31		30		31		31		30		31		26.4		15.4

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		363.8		31		28		31		30		31		30		30.3		30.5		30		31		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		324.4		31		28		31		30		30.7		26.6		13.7		14.7		26.8		30.9		30		31

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		240.6		31		28		31		29.4		19.8		5.1		0.2		0.3		9		26.6		29.2		31

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		155.8		29.9		26.6		24.2		12.2		2.3		---		---		---		0.5		8.8		21.6		29.7

Average Number of Days Below 32F/0C

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		70.5		19		14.8		7.5		1		---		---		---		---		---		1.5		8.8		18

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9.5		3		2.2		0.2		---		---		---		---		---		---		---		1		3.2

Average Number of Days Below 10F/-12C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.7		0.6		0.7		---		---		---		---		---		---		---		---		0.4		1

Average Number of Days Below 0F/-17C

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.1		0.4		0.2		---		---		---		---		---		---		---		---		---		0.4

Average Precipitation

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		7.8		1.1		0.7		0.7		0.6		0.6		0.4		0.2		0.3		0.3		0.6		1.1		1.1

Average Number of Days With Precipitation

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		78		10		9		8		6		6		4		2		3		3		6		10		11

Most Reported Precipitation in a Month

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		3.8		2.8		1.8		2.1		1.9		2.1		1.2		1		1.6		1.8		3.6		3.2		3.8

Least Reported Precipitation in a Month

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		---		---		---		---		---		---		---		---		---		---		0.1		0.2

Most Precipitation Reported in a Day

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		2.1		0.9		0.7		0.6		1.1		1		0.6		0.6		0.9		0.8		2.1		1.7		1

Avg. No. of Days w/Precip. Above 0.1in/2.5mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		27.9		3.8		2.6		2.9		1.9		2.4		1.9		0.6		0.8		1.3		1.8		4		3.9

Avg. No. of Days w/Precip. Above 0.2in/5mm

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		29		4		3		3		2		2		2		1		1		1		2		4		4

Avg. No. of Days w/Precip. Above 0.5in/13mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.3		0.1		0.1		---		0.2		0.1		0.1		0.1		0.1		---		0.1		0.2		0.2

Average Snowfall

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		2.7		1.2		0.6		---		---		---		---		---		---		---		---		0.2		0.7

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.7		0.3		0.1		0.1		---		---		---		---		---		---		---		---		0.2

Most Snow Reported in a Month

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		12		12		11		0.8		---		---		---		---		---		---		---		6		10

Avg. No. of Days w/Snow Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.3		0.1		0.1		---		---		---		---		---		---		---		---		---		0.1

Avg. No. of Days w/Snow Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.1		---		0.1		---		---		---		---		---		---		---		---		---		---

Avg. # of Days w/Snow Depth Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.9		0.3		0.2		0.2		---		---		---		---		---		---		---		---		0.2

Avg. # of Days w/Snow Depth Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.5		0.2		0.2		0.1		---		---		---		---		---		---		---		---		---

Avg. # of Days w/Snow Depth Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.1		0.1		---		---		---		---		---		---		---		---		---		---		---

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4862		911		742		586		374		183		47		4		3		68		343		660		941

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		797		---		---		---		1		29		103		298		282		81		2		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3088		1		1		21		105		314		506		759		744		464		154		19		1

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.7		10.9		12.5		14.1		15.6		16.3		15.9		14.6		13		11.4		10		9.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.1		1.3		2.3		3.8		5.1		6.1		6.9		7.1		6.2		4.7		3		1.6		1.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.8		1.2		1.8		2		2.4		2.6		2.7		2.4		2		1.4		0.9		0.7

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.5		2.2		3.3		4.6		5.4		5.7		6		6.3		6.2		5.5		4		2.5		1.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		1.9		3.1		4.2		5.7		6.1		7		7.2		6.6		5.4		3.9		2.2		1.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.1		1.3		2.3		3.8		5.1		6.1		6.9		7.1		6.2		4.7		3		1.6		1.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.9		0.8		1.3		1.9		2		2.6		3		3.3		2.8		2.1		1.5		1.1		0.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		2.5		4.1		5.3		5.9		6.5		6.9		7.2		6.9		6.1		4.7		3.2		2.2

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.3		2.1		3.9		5		6.3		7.4		8		7.8		7.1		6.1		4.6		2.9		2

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.6		1.1		1.8		3.2		4.6		5.4		6.2		6.2		5.7		4.2		2.6		1.4		0.9

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.7		1		1.7		1.9		2.4		2.6		2.5		2.2		1.8		1.3		0.8		0.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.9		1.7		2.5		3.8		4.9		5		5.3		5.5		5.7		4.8		3.5		2.2		1.4

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.8		1.5		2.2		3.2		4.9		4.8		5.8		6		6.1		4.6		3.3		1.8		1.2