Regions being in the rainy season in January in United States of America are the following: Oregon, Washington. This is 2 of 24 regions in United States of America. There is just one region in January in United States of America experiencing the dry season and this is Nevada. Regions being in the tourist season in January in United States of America are the following: Florida - Peninsula west, Florida - Peninsula east, California - South coast, Nevada, Hawaii. This is 5 of 24 regions in United States of America.

The day temperature in United States of America in January is the lowest in Wyoming - National parks - its value is -2.6 °C (27.4 °F). The day temperature in United States of America in January is the highest in Hawaii - its value is 26.3 °C (79.3 °F).

The night temperature in United States of America in January is the lowest in Wyoming - National parks - its value is -15.5 °C (4.0 °F). The highest value of the night temperature in United States of America in January can be seen in Hawaii with a value of 17.8 °C (64.0 °F).

The lowest value of the sea temperature in United States of America in January can be seen in Rhode Island with a value of 5.0 °C (41.0 °F). The sea temperature in United States of America in January is the highest in Hawaii - its value is 24.4 °C (75.8 °F).

In January in United States of America - the region with the lowest number of rainy days is Nevada. The value in this region is 4 days. The number of rainy days in United States of America in January is the highest in Oregon - its value is 19 days.

The lowest rainfall amount in January in United States of America can be found in Nevada, where the value of rainfall amount is 14 mm (0.56 in). The highest rainfall amount in United States of America in January can be found in Oregon, where the value of rainfall amount is 312 mm (12.29 in).

The lowest wind speed in January in United States of America can be found in Utah - National parks, where the value of wind speed is 2.3. The wind speed in United States of America in January is the highest in Rhode Island - its value is 5.7.

The humidity in United States of America in January is the lowest in Nevada - its value is 48 %. In January in United States of America - the region with the highest humidity is Oregon. The value in this region is 85 %.

The number of sun hours (without clouds) in United States of America in January is the lowest in Washington - its value is 2 hours. The highest value of the number of sun hours (without clouds) in January in United States of America can be seen in Nevada with a value of 8 hours.

In January in United States of America - the region with the lowest clear sky percentage is Washington. The value in this region is 26 %. The highest value of the clear sky percentage in January in United States of America can be seen in Nevada with a value of 77 %.

In United States of America in January - the region with the lowest day length is Alaska. The value in this region is 6 hours. The day length in January in United States of America is the highest in Hawaii - its value is 11 hours.