Jamestown
North Dakota, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Jamestown, ND

January, like December, is another subzero cold winter month in Jamestown, North Dakota, with average temperature varying between 1.2°F (-17.1°C) and 19.2°F (-7.1°C).

Temperature

January is the coldest month, with an average high-temperature of 19.2°F (-7.1°C) and an average low-temperature of 1.2°F (-17.1°C).

Rainfall

In Jamestown, during 7 rainfall days, 0.5" (13mm) of precipitation is typically accumulated. In Jamestown, during the entire year, the rain falls for 94 days and collects up to 19.6" (498.5mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall is January when 9.7" (246.4mm) of snow is typically aggregated.

Daylight

The average length of the day in Jamestown is 9h.

Sunshine

In Jamestown, North Dakota, the average sunshine is 5h.

UV index

Months with the lowest UV index in Jamestown are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from the exposure to the Sun's UV rays for ordinary individuals.
In January, the average maximum UV index of 1 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Jamestown?

With an average high-temperature of 19.2°F (-7.1°C) and an average low-temperature of 1.2°F (-17.1°C), January is the coldest month in Jamestown, North Dakota.

What is the temperature in January in Jamestown?

The average high-temperature, in January, in Jamestown, is 19.2°F (-7.1°C), while the average low-temperature is 1.2°F (-17.1°C).

How much does it rain in Jamestown in January?

In Jamestown, North Dakota, during January, the rain falls for 7 days and regularly aggregates up to 0.5" (13mm) of precipitation.

How much does it snow in Jamestown in January?

During January, Jamestown regularly aggregates up to 9.7" (246.4mm) of snow.

What is the snowiest month in Jamestown?

The month with the most snowfall in Jamestown is January when 9.7" (246.4mm) of snow is typically aggregated.

How many hours of daylight does Jamestown have in January?

In January, the average length of the day in Jamestown, North Dakota, is 9h.

How long on average sun shines in January in Jamestown?

In Jamestown, the average sunshine in January is 5h.

When is the lowest UV index in Jamestown?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Jamestown.

How high is the UV index in January in Jamestown?

The average daily maximum UV index in January in Jamestown is 1. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.
Average temperature in January - Jamestown, ND
  • Average high temperature in January: 19.2°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (19.2°F).

  • Average low temperature in January: 1.2°F

The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (1.2°F).

Average rainfall in January - Jamestown, ND
  • Average rainfall in January: 0.5"

The wettest month (with the highest rainfall) is June (3.5").
Driest months (with the lowest rainfall) are February and December (0.4").

Average rainfall days in January - Jamestown, ND
  • Average rainfall days in January: 7 days

The month with the highest number of rainy days is June (11 days).
Months with the lowest number of rainy days are October and November (6 days).

Average snowfall in January - Jamestown, ND
  • Average snowfall in January: 9.7"

The month with the highest snowfall is January (9.7").
Months with the lowest snowfall are June, July, August and September (0").

Average daylight in January / Average sunshine in January - Jamestown, ND
  • Average daylight in January: 9h

The month with the longest days is June (Average daylight: 15.8h).
The month with shortest days is December (Average daylight: 8.6h).

  • Average sunshine in January: 5h

The month with most sunshine is July (Average sunshine: 11h).
Months with least sunshine are November and December (Average sunshine: 4).

Average UV index in January - Jamestown, ND
  • Average UV index in January: 1

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).