Katherine, AZ climate
Katherine has warm winters and scorching summers, with very little rain. A typical July afternoon reaches 110°, a January night drops to 44°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Katherine feels like
Winter
Spring
Summer
Fall
Katherine weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 65° | 44° | 0.8" | 0 | 3 | 0 | 50° – 61° |
| February | 69° | 46° | 1.0" | 0 | 4 | 0 | 50° – 64° |
| March | 78° | 51° | 0.6" | 0 | 3 | 0 | 57° – 72° |
| April | 86° | 57° | 0.2" | 0 | 1 | 0 | 65° – 76° |
| May | 95° | 66° | 0.1" | 0 | 0 | 0 | 74° – 86° |
| June | 106° | 74° | 0.0" | 0 | 0 | 0 | 84° – 95° |
| July | 110° | 81° | 0.3" | 0 | 1 | 0 | 91° – 98° |
| August | 108° | 81° | 0.4" | 0 | 2 | 0 | 90° – 98° |
| September | 101° | 73° | 0.3" | 0 | 1 | 0 | 84° – 90° |
| October | 88° | 60° | 0.5" | 0 | 1 | 0 | 70° – 81° |
| November | 74° | 49° | 0.3" | 0 | 1 | 0 | 54° – 67° |
| December | 63° | 43° | 0.5" | 0 | 2 | 0 | 49° – 58° |
| Year | 87° | 60° | 4.9" | 0.0" | 21 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Katherine
Katherine gets 5 inches of rain and melted snow a year. February is the wettest month and June the driest. Rain or snow falls on about 21 days a year.
A year-round growing season
Heating and cooling a home in Katherine
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Katherine, 20% of that work is heating and 80% is cooling, so air conditioning is the bigger bill.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Katherine compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Katherine averaged 1.6° warmer than the 1900s. The biggest change is in January (+2.6°). The shift is larger than in 74% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Katherine’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 57° to 72°. September is the most reliable, staying within 6°.
Common questions about Katherine’s climate
What is the coldest month in Katherine?
December, with a typical high of 63° and a low of 43°.
What is the hottest month in Katherine?
July, with a typical high of 110° and a low of 81°. About 173 days a year reach 90°.
How much snow does Katherine get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Katherine?
Frost is uncommon. Only 61% of years see a night at 32° or below.
What is the rainiest month in Katherine?
February, with 1.0 inches of rain and melted snow. The year totals 5 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Katherine itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Laughlin, NV (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.