January weather forecast
Marana, AZ

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Weather in January

January in Marana, Arizona, typically sees a high average temperature of 63°F (17.2°C) and lows averaging around 44.8°F (7.1°C). The turn of the year sees an improvement in the general weather conditions from December, particularly with an increase in daylight hours from 10.1h to 10.3h. However, rainfall increases slightly, dampening the otherwise pleasant winter weather. Often regarded as a transitional period, the month also presents slight changes in atmospheric pressure and wind speeds. Clear skies are more the norm than the exception, with cloud coverage accounting for just 18% of the sky.

Temperature

The high-temperature average in January for Marana is a still enjoyable 63°F (17.2°C), staying closely aligned with December's conditions. An average nighttime temperature of 44.8°F (7.1°C) is witnessed throughout January.

Humidity

In Marana, the average relative humidity in January is 43%.

Rainfall

In Marana, in January, during 4.8 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. Throughout the year, there are 71.5 rainfall days, and 9.72" (247mm) of precipitation is accumulated.

Daylight

The average length of the day in January is 10h and 19min.
On the first day of January, sunrise is at 7:26 am and sunset at 5:30 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:56 pm MST.

Sunshine

In January, the average sunshine in Marana is 7h.

UV index

In Marana, the average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 4 during January leads to these advisories:
Put precautions into practice - Protective measures against sun-induced damage are advised. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.

Frequently asked questions

What is the temperature in January?

In January, the average high-temperature and low-temperature are 63°F (17.2°C) and 44.8°F (7.1°C) respectively.

What is the average humidity in January?

The average relative humidity in January is 43%.

How much does it rain in January?

In January, the rain falls for 4.8 days. Throughout January, 0.79" (20mm) of precipitation is accumulated.

What is the average length of the day in January?

In January, the average day length is 10h and 19min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:26 am and sunset at 5:30 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:56 pm MST.

How many hours of sunshine does Marana have in January?

In January, the average sunshine duration is 7h.

What is the UV index reading in January?

In Marana, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Marana, AZ

Average temperature in January - Marana, AZ
  • Average high temperature in January: 63°F

The warmest month (with the highest average high temperature) is June (99°F).
The month with the lowest average high temperature is December (61.9°F).

  • Average low temperature in January: 44.8°F

The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is December (44.6°F).

Average pressure in January
Marana, AZ

Average pressure in January - Marana, AZ
  • Average pressure in January: 30.07"Hg

The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

Average wind speed in January
Marana, AZ

Average wind speed in January - Marana, AZ
  • Average wind speed in January: 5.5mph

The windiest months (with the highest average wind speed) are April and May (7.9mph).
The calmest months (with the lowest average wind speed) are January and December (5.5mph).

Average humidity in January
Marana, AZ

Average humidity in January - Marana, AZ
  • Average humidity in January: 43%

The month with the highest relative humidity is December (45%).
The month with the lowest relative humidity is June (18%).

Average rainfall in January
Marana, AZ

Average rainfall in January - Marana, AZ
  • Average rainfall in January: 0.79"

The wettest month (with the highest rainfall) is August (1.77").
The driest months (with the least rainfall) are April and May (0.2").

Average rainfall days in January
Marana, AZ

Average rainfall days in January - Marana, AZ
  • Average rainfall days in January: 4.8 days

The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is May (2.4 days).

Average daylight in January /
Average sunshine in January
Marana, AZ

Average daylight in January / Average sunshine in January - Marana, AZ
  • Average daylight in January: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in January: 7h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

Average sunshine days in January
Marana, AZ

Average sunshine days in January - Marana, AZ
  • Average sunshine days in January: 25.8 days

The month with the most sunshine days is May (28.2 days).
The month with the least sunshine days is July (13 days).

Average UV index in January
Marana, AZ

Average UV index in January - Marana, AZ
  • Average UV index in January: 4

The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in January
Marana, AZ

Average cloud cover in January - Marana, AZ
  • Average cloud cover in January: 18

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 7).

Average visibility in January
Marana, AZ

Average visibility in January - Marana, AZ
  • Average visibility in January: 6mi

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

Marana, Arizona, USA

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