Iwamizawa Weather in January
Average highs run from 0°C on January 1 to -1°C on January 31, and lows from to . Normal precipitation for the month is 120 mm over about 22 wet days.
January day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 0°C
- Precipitation
- 120 mm
- Record high
- 8°CJan 8, 1983
- Record low
- -21°CJan 24, 1954
- Daylight
- 9 h 03 min to 9 h 53 min
- Cloud cover
- 69%
- Humidity
- 92%
- Dew point
- -9°C
- Wind
- 15.8 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Jan 1 | 0°C | 5°C 2007 | -13°C 1975 | 75% | |
| Jan 2 | 2°C | 6°C 1997 | -16°C 1953 | 75% | |
| Jan 3 | 1°C | 8°C 1980 | -18°C 1953 | 76% | |
| Jan 4 | 0°C | 7°C 1980 | -18°C 1970 | 76% | |
| Jan 5 | 0°C | -6°C | 7°C 1976 | -17°C 1970 | 76% |
| Jan 6 | 0°C | 4°C 1964 | -17°C 1957 | 76% | |
| Jan 7 | 0°C | 7°C 2000 | -17°C 1959 | 74% | |
| Jan 8 | -1°C | 8°C 1983 | -18°C 1957 | 73% | |
| Jan 9 | 1°C | 7°C 1995 | -20°C 1953 | 73% | |
| Jan 10 | 0°C | 8°C 2001 | -21°C 1951 | 73% | |
| Jan 11 | -1°C | 7°C 1971 | -14°C 1959 | 72% | |
| Jan 12 | -1°C | 7°C 1982 | -15°C 1956 | 71% | |
| Jan 13 | 0°C | 6°C 1964 | -14°C 1956 | 71% | |
| Jan 14 | -1°C | 5°C 1997 | -15°C 2001 | 71% | |
| Jan 15 | -1°C | 5°C 2002 | -17°C 1970 | 71% | |
| Jan 16 | 0°C | 6°C 1959 | -18°C 1967 | 71% | |
| Jan 17 | -1°C | 7°C 1987 | -19°C 1967 | 71% | |
| Jan 18 | 0°C | 5°C 1969 | -17°C 1955 | 70% | |
| Jan 19 | 0°C | 7°C 2009 | -18°C 1966 | 70% | |
| Jan 20 | 0°C | 5°C 2010 | -18°C 1966 | 70% | |
| Jan 21 | -1°C | 5°C 1988 | -18°C 1960 | 70% | |
| Jan 22 | 0°C | -8°C | 7°C 1967 | -15°C 1957 | 71% |
| Jan 23 | 0°C | 8°C 2009 | -18°C 1955 | 72% | |
| Jan 24 | -2°C | 4°C 1973 | -21°C 1954 | 72% | |
| Jan 25 | -1°C | 7°C 1959 | -17°C 1985 | 72% | |
| Jan 26 | 5°C 1999 | -15°C 1954 | 72% | ||
| Jan 27 | 0°C | 6°C 1983 | -15°C 1960 | 73% | |
| Jan 28 | 0°C | 7°C 1983 | -18°C 1954 | 72% | |
| Jan 29 | -1°C | 8°C 1983 | -19°C 1977 | 72% | |
| Jan 30 | 0°C | 7°C 1957 | -17°C 1967 | 71% | |
| Jan 31 | -1°C | 6°C 2007 | -19°C 1967 | 71% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+9).
- January 1
- sunrise 7:05 AM, sunset 4:08 PM
- January 31
- sunrise 6:50 AM, sunset 4:43 PM
Other months
Sources
Records: NOAA GHCN-Daily, station JA000047412, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.