The highest day temperature in January 2026 was 68°F. The lowest night temperature was 32°F. The average values for day and night temperatures during January were 57.0°F и 41.5°F respectivly.

Most of the days in January are sunny but you can also expect cloudy and gloomy days.

Precipitation total in January for Jerome is 0.7 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 4.3 mph. It makes January one of the most windless months of the year for Jerome.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Jerome in January is 7.7 hours.