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 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
Weather in January
Temperature
The arrival of January coincides with an average high-temperature of a still enjoyable 63°F (17.2°C), indicating a minimal shift from December's 61.9°F (16.6°C). Rillito encounters an average low-temperature of 44.8°F (7.1°C) during January nights.Humidity
In January, the average relative humidity in Rillito is 43%.Rainfall
In January, in Rillito, the rain falls for 4.8 days. Throughout January, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 71.5 rainfall days, and 9.72" (247mm) of precipitation is accumulated.Daylight
In January, the average length of the day is 10h and 19min.On the first day of January in Rillito, sunrise is at 7:24 am and sunset at 5:29 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:55 pm MST.
Sunshine
In January, the average sunshine is 7h.UV index
In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 4 during January translates into the following directions:
Undertake protective steps - Preventing sun damage is advised. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures in Rillito?
What is the average humidity in January in Rillito?
How many days does it rain in January in Rillito?
How many hours of daylight does Rillito have in January?
What time are sunrise and sunset in January in Rillito?
How many hours of sunshine does Rillito have in January?
What is the UV index intensity in January in Rillito?
Average temperature in January
Rillito, 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
Rillito, 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
Rillito, 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
Rillito, 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
Rillito, 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
Rillito, 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
Rillito, 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
Rillito, 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
Rillito, 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
Rillito, 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
Rillito, 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).
Rillito, Arizona, USA
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