Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
January, with an average high of -6.4°C (20.5°F) and a low of -10.4°C (13.3°F), signifies the coldest month of the year.Humidity
The average relative humidity in January is 95%.Rainfall
In Petruma, in January, during 2.3 rainfall days, 27mm (1.06") of precipitation is typically accumulated. In Petruma, Finland, during the entire year, the rain falls for 127.8 days and collects up to 468mm (18.43") of precipitation.Snowfall
Months with snowfall in Petruma, Finland, are January through June, September through December. In Petruma, during January, snow falls for 22.2 days and regularly aggregates up to 181mm (7.13") of snow. In Petruma, during the entire year, snow falls for 120.8 days and aggregates up to 1095mm (43.11") of snow.Daylight
The average length of the day in January is 6h and 10min.On the first day of the month, sunrise is at 09:33 and sunset at 14:42. On the last day of January, sunrise is at 08:37 and sunset at 15:58 EET.
Sunshine
In January, the average sunshine is 1.3h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: In January, the maximum UV index of 1 translates into these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is January?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How long on average sun shines in January in Petruma?
When is the lowest UV index?
What is the UV index reading in January in Petruma?
Average temperature in January
Petruma, Finland
- Average high temperature in January: -6.4°C
The warmest month (with the highest average high temperature) is July (21.2°C).
The month with the lowest average high temperature is January (-6.4°C).
- Average low temperature in January: -10.4°C
The month with the highest average low temperature is July (12.5°C).
The coldest month (with the lowest average low temperature) is January (-10.4°C).
Average pressure in January
Petruma, Finland
- Average pressure in January: 1011.9mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.6mbar).
Average wind speed in January
Petruma, Finland
- Average wind speed in January: 12.3km/h
The windiest months (with the highest average wind speed) are November and December (13.8km/h).
The calmest month (with the lowest average wind speed) is July (10.2km/h).
Average humidity in January
Petruma, Finland
- Average humidity in January: 95%
The month with the highest relative humidity is February (96%).
The months with the lowest relative humidity are May and June (68%).
Average rainfall in January
Petruma, Finland
- Average rainfall in January: 27mm
The wettest month (with the highest rainfall) is July (66mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in January
Petruma, Finland
- Average rainfall days in January: 2.3 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (2 days).
Average snowfall in January
Petruma, Finland
- Average snowfall in January: 181mm
The month with the highest snowfall is March (202mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in January
Petruma, Finland
- Average snowfall days in January: 22.2 days
The month with the highest number of snowfall days is December (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Petruma, Finland
- Average daylight in January: 6h and 1min
The month with the longest days is June (Average daylight: 19h and 48min).
The month with the shortest days is December (Average daylight: 5h and 12min).
- Average sunshine in January: 1h and 2min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 0h and 36min).
Average sunshine days in January
Petruma, Finland
- Average sunshine days in January: 9.6 days
The month with the most sunshine days is May (15 days).
The month with the least sunshine days is February (7.7 days).
Average UV index in January
Petruma, Finland
- Average UV index in January: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in January
Petruma, Finland
- Average cloud cover in January: 83
The month with the most cloud cover is February (Cloud cover 84).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in January
Petruma, Finland
- Average visibility in January: 5km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (5km).
