Average Weather In February For Tucson, Arizona, USA

Location

This report describes the typical weather at the Tucson International Airport (Tucson, Arizona, United States) weather station over the course of an average February. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.

Tucson, Arizona has a hot semi-arid steppe climate. The area within 25 mi of this station is covered by shrublands (70%), grasslands (23%), forests (4%), and built-up areas (3%).

Temperature

The month of February is characterized by rising daily high temperatures, with daily highs increasing from 66°F to 71°F over the course of the month, exceeding 81°F or dropping below 56°F only one day in ten.

Daily High and Low Temperature in February

The daily average low (blue) and high (red) temperature with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
Daily low temperatures are around 43°F, falling below 34°F or exceeding 52°F only one day in ten.

Fraction of Time Spent in Various Temperature Bands in February

The average fraction of time spent in various temperature bands: frigid (below 15°F), freezing (15°F to 32°F), cold (32°F to 50°F), cool (50°F to 65°F), comfortable (65°F to 75°F), warm (75°F to 85°F), hot (85°F to 100°F) and sweltering (above 100°F).

Sun

Over the course of February, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 50 minutes, implying an average day-over-day increase of 1.7 minutes.

The shortest day of the month is February 1 with 10:39 hours of daylight; the longest day is February 29 with 11:30 hours of daylight.

Daily Hours of Daylight and Twilight in February

The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6° from the horizon), civil twilight (Sun is not visible but is less than 6° below the horizon), nautical twilight (Sun is between 6° and 12° below the horizon), astronomical twilight (Sun is between 12° and 18° below the horizon), and full night.

The earliest sunrise is at 6:52am on February 29; the latest sunset is at 6:21pm on February 29; the latest sunrise is at 7:18am on February 1; the earliest sunset is at 5:57pm on February 1.

Daylight savings time (DST) is not observed in 2012.

Daily Sunrise & Sunset with Twilight in February

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Clouds

The median cloud cover is 8% (clear) and does not vary substantially over the course of the month.

Median Cloud Cover in February

The median daily cloud cover (black line) with percentile bands (inner band from 40th to 60th percentile, outer band from 25th to 75th percentile).

On February 15, a representative day, the sky is clear or mostly clear 63% of the time, partly cloudy 11% of the time, and mostly cloudy or overcast 24% of the time.

Cloud Cover Types in February

The fraction of time spent in each of the five sky cover categories. From top (most blue) to bottom (most gray), the categories are clear, mostly clear, partly cloudy, mostly cloudy, and overcast. Pink indicates missing data. Outside of the United States clear skies are often reported ambiguously, leading them to be lumped in with the missing data.

Precipitation

The average probability that some form of precipitation will be observed in a given day is 18%, with little variation over the course of the month.

Probability of Precipitation at Some Point in the Day in February

The fraction of days in which various types of precipitation are observed. If more than one type of precipitation is reported in a given day, the more severe precipitation is counted. For example, if light rain is observed in the same day as a thunderstorm, that day counts towards the thunderstorm totals. The order of severity is from the top down in this graph, with the most severe at the bottom.

Throughout February, the most common forms of precipitation are light rain and moderate rain.

Light rain is the most severe precipitation observed during 52% of those days with precipitation. It is most likely around February 2, when it is observed during 10% of all days.

Moderate rain is the most severe precipitation observed during 30% of those days with precipitation. It is most likely around February 1, when it is observed during 6% of all days.

Types of Precipitation Throughout February

Relative frequency of various types of precipitation over the course of a typical February.

Snow

Either snow is exceptionally unlikely to fall at this location in February or this station does not reliably report precipitation types.

Humidity

The relative humidity typically ranges from 20% (dry) to 71% (humid) over the course of a typical February, rarely dropping below 8% (very dry) and reaching as high as 99% (very humid).

The air is driest around February 29, at which time the relative humidity drops below 26% (dry) three days out of four; it is most humid around February 1, rising above 54% (mildly humid) three days out of four.

Relative Humidity in February

The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew Point

Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Over the course of a typical February, the dew point typically varies from 22°F (dry) to 35°F (dry) and is rarely below 6°F (dry) or above 48°F (dry).

Dew Point in February

The daily average low (blue) and high (red) dew point with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Wind

Over the course of February typical wind speeds vary from 0 mph to 14 mph (calm to moderate breeze), rarely exceeding 22 mph (fresh breeze).

The highest average wind speed of 8 mph (gentle breeze) occurs around February 29, at which time the average daily maximum wind speed is 14 mph (moderate breeze).

The lowest average wind speed of 7 mph (light breeze) occurs around February 1, at which time the average daily maximum wind speed is 13 mph (moderate breeze).

Wind Speed in February

The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
The wind is most often out of the south east (26% of the time), south (16% of the time), and west (11% of the time). The wind is least often out of the north east (2% of the time).

Wind Directions in February

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions in February

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.