Omachi (Nagano): temperature and climate normals

Latest12.9 °COct 9, 2026 20:10 JST

24 h max / min23.7 °C / 6.8 °C

Annual mean (normal)9.7 °Crank 684 of 903

Annual precipitation (normal)1,405.9mmrank 572

Altitude784 m

Last 24 hours

Mean maxMeanMean min

Month	Mean	Max	Min	≥30°C	Min<0°C	Precip.	Sun	Snow
Jan	-2.8 °C	1.6 °C	-7.5 °C	0.0days	30.5days	84.7mm	107.2h	47 cm
Feb	-2.3 °C	2.8 °C	-7.4 °C	0.0days	27.3days	78.1mm	125.3h	54 cm
Mar	1.6 °C	7.4 °C	-3.4 °C	0.0days	26.0days	100.1mm	163.4h	32 cm
Apr	8.0 °C	15.0 °C	2.0 °C	0.0days	10.0days	98.1mm	185.1h	2 cm
May	14.0 °C	20.8 °C	8.1 °C	0.2days	0.4days	111.5mm	198.4h	0 cm
Jun	17.9 °C	23.8 °C	13.2 °C	0.7days	0.0days	159.4mm	146.6h	0 cm
Jul	21.6 °C	27.2 °C	17.4 °C	8.0days	0.0days	195.3mm	137.4h	0 cm
Aug	22.4 °C	28.5 °C	18.0 °C	11.6days	0.0days	136.1mm	169.4h	0 cm
Sep	18.1 °C	23.7 °C	13.9 °C	1.3days	0.0days	165.0mm	118.9h	0 cm
Oct	11.8 °C	17.7 °C	7.2 °C	0.0days	0.9days	129.1mm	137.6h	0 cm
Nov	5.8 °C	11.6 °C	0.9 °C	0.0days	12.9days	69.8mm	132.2h	3 cm
Dec	0.2 °C	4.8 °C	-3.9 °C	0.0days	27.6days	78.8mm	108.6h	26 cm
Year	9.7 °C	15.4 °C	4.9 °C	21.8days	135.6days	1,405.9mm	1,730.0h	59 cm

For reference: latest 12.9 °C; the Oct mean normal is 11.8 °C (one observation vs a monthly mean).

Normals: JMA 2020 normals (1991–2020 averages). Latest values are observations fetched once a day, not real time.