Conditions for the Trial Ground

Climatic Conditions of Nagaoka

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annually	Note
Average Temperature (°C)	1.3	1.2	4.1	10.5	16.0	20.2	23.9	25.6	21.1	15.0	9.2	4.1	12.7	A
Maximum Temperature (°C)	3.8	3.9	7.9	15.6	20.8	24.3	27.7	29.8	25.1	19.3	13.2	7.2	16.6	B
Minimum Temperature (°C)	-1.0	-1.2	0.8	5.9	11.6	16.6	20.6	22.1	17.8	11.5	5.8	1.6	9.4	C
Average Wind Speed(m/s)	2.5	2.6	2.4	2.5	2.2	1.8	1.8	1.7	1.6	1.8	2.1	2.6	2.1	D
Precipitation (mm)	297.9	168.8	140.7	99.5	114.2	125.5	225.3	148.6	175.8	195.3	281.0	335.8	2,308.5	E
Hours of Sunshine (h)	44.4	60.0	105.0	151.8	152.4	95.5	110.7	162.8	111.1	124.4	91.3	61.8		F
Average Humidity (%)	87.0	83.3	75.3	70.3	74.3	82.0	83.0	82.0	84.7	84.0	82.7	84.7		G
Maximum Snow Depth (cm)	79.0	86.0	56.0	-	-	-	-	-	-	-	-	40.0	90.0	H

Note
A~F	Observed by the Niigata Local Meteorological Observatory in Nagaoka (Niigata Local Meteorological Observatory Homepage, electronic reference room)
G	Observed by the Nagaoka Institute of Snow and Ice Studies, the National Research Institute for Earth Science and Disaster Prevention in Nagaoka (provided by the said institute)
H	Observed in the Echigo Hillside Park.
A~E	Average from 1979 to 2000
F	Average from 1987 to 2002
G	Average from 1997 to 2002
H	Average from 1999 to 2004