January weather forecast
Ironstone, PA

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Weather in January

January, the same as December, is a wintry winter month in Ironstone, Pennsylvania, with an average temperature varying between 23.2°F (-4.9°C) and 35.4°F (1.9°C).

Temperature

Ironstone reaches its lowest average temperatures in January, measuring 35.4°F (1.9°C) at the peak and 23.2°F (-4.9°C) at the lowest.

Humidity

The average relative humidity in January is 77%.

Rainfall

In Ironstone, in January, during 7.3 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 146.5 rainfall days, and 27.87" (708mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In January, it is snowing for 5.8 days. Throughout January, 2.64" (67mm) of snow is accumulated. In Ironstone, during the entire year, snow falls for 19.1 days and aggregates up to 11.54" (293mm) of snow.

Daylight

In Ironstone, the average length of the day in January is 9h and 41min.
On the first day of January, sunrise is at 7:25 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:19 pm EST.

Sunshine

In Ironstone, the average sunshine in January is 4.8h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In January, a daily UV index of 2 turns into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Jun 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

In Ironstone, January is the coldest month, with temperatures averaging a high of 35.4°F (1.9°C) and a low of 23.2°F (-4.9°C).

How cold is January?

The average high-temperature and low-temperature during January are 35.4°F (1.9°C) and 23.2°F (-4.9°C) respectively.

What is the average humidity in January?

The average relative humidity in January is 77%.

How much does it rain in January?

In Ironstone, Pennsylvania, in January, during 7.3 rainfall days, 1.85" (47mm) of precipitation is typically accumulated.

How many days does it snow in January?

In Ironstone, in January, during 5.8 snowfall days, 2.64" (67mm) of snow is typically accumulated.

How many hours of daylight does Ironstone have in January?

In Ironstone, the average day length in January is 9h and 41min.

What time are sunrise and sunset in January?

On the first day of January, sunrise is at 7:25 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:19 pm EST.

How many hours of sunshine does Ironstone have in January?

In January, the average sunshine duration is 4.8h.

When is the lowest UV index?

The months with the lowest UV index in Ironstone are January through March, November and December, with an average maximum UV index of 2.

How high is the UV index in January?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Ironstone, PA

Average temperature in January - Ironstone, PA
  • Average high temperature in January: 35.4°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in January: 23.2°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

Average pressure in January
Ironstone, PA

Average pressure in January - Ironstone, PA
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in January
Ironstone, PA

Average wind speed in January - Ironstone, PA
  • Average wind speed in January: 8mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in January
Ironstone, PA

Average humidity in January - Ironstone, PA
  • Average humidity in January: 77%

The months with the highest relative humidity are February and October (80%).
The months with the lowest relative humidity are April and July (75%).

Average rainfall in January
Ironstone, PA

Average rainfall in January - Ironstone, PA
  • Average rainfall in January: 1.85"

The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in January
Ironstone, PA

Average rainfall days in January - Ironstone, PA
  • Average rainfall days in January: 7.3 days

The months with the highest number of rainy days are May and July (17 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in January
Ironstone, PA

Average snowfall in January - Ironstone, PA
  • Average snowfall in January: 2.64"

The month with the highest snowfall is March (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Ironstone, PA

Average snowfall days in January - Ironstone, PA
  • Average snowfall days in January: 5.8 days

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Ironstone, PA

Average daylight in January / Average sunshine in January - Ironstone, PA
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in January
Ironstone, PA

Average sunshine days in January - Ironstone, PA
  • Average sunshine days in January: 18.7 days

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is May (12.3 days).

Average UV index in January
Ironstone, PA

Average UV index in January - Ironstone, PA
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in January
Ironstone, PA

Average cloud cover in January - Ironstone, PA
  • Average cloud cover in January: 46

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in January
Ironstone, PA

Average visibility in January - Ironstone, PA
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

Ironstone, Pennsylvania, USA

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