(gray line) for Arizona (left) and California (right) for 1895-2020. Plot of average annual temperatures (black dots) and running 30-year means Top five warmest years by average temperature (☏).įig. The daily average temperature at an individual climate station is calculated by averaging the day’s high and low temperature. The twelve monthly values are then averaged for a final annual value.

Daily temperature values from climate stations across the state are compiled and aggregated into a single state-wide value for each month (Table 1). Official rankings are based on data from NCEI ( link ). Map depicting average temperature rank of 2020 by state.

Temperatures have shown a steady upward trend over the past several decades (Figure 2)įig. Across California, 2020 will rank as the 3rd hottest on record with an average temperature of 60.6☏, compared to the record of 61.4☏ in 2014. For Arizona, the year as a whole ended as the second hottest on record with an average temperature of 62.6☏, falling just behind 2017 ’s record of 63.0☏ (Figure 1). Numerous daily temperature records were set across the region, with several new monthly and seasonal records. The year 2020 will infamously be known for having the hottest and driest summer/monsoon season on record (since 1895) across the Southwest. Phoenix is forecasted to see chances up to 50% for showers and thunderstorms starting Saturday night through Monday.NOAA/NWS Phoenix, AZ - Updated Jan 28, 2021 The biggest impact that we will be seeing with that is wind gusts as well as some potential blowing dust that might reduce visibility in those dust prone regions,' Leffel said. National Weather Service Meteorologist Jessica Leffel says that the dry trend is likely to continue. That streak of heat has also seen very little rain in the Valley, with some areas only seeing enough to make their cars filthy. It’s been about 25 days of at least 110 degrees in Phoenix, and forecasters expect the heat trend to continue through at least Friday. It's likely the record will fall, since high temperatures above 105 are forecast through the end of the month.

city, has seen a monthly average temperature above 100 degrees, according to National Oceanic and Atmospheric Administration records. If the average holds through the end of July, it will mark the first time Phoenix, or any major U.S. This month's 102.8 degree average is also more than three degrees hotter than the next-hottest month on record for Phoenix, which was August 2020, when temperatures averaged 99.1 degrees. According to the National Weather Service, the normal average for July is 95.6. That’s a whole seven degrees above normal for July. That means, so far, the overall average temperature for the month of July has been 102.8 degrees. Nights have not dropped below 90 for more than two weeks. Now, it appears July will also break the record for the hottest month the city has ever seen.ĭaytime temperatures this month have soared as high as 119 degrees. Phoenix’s brutal heat wave has already broken a string of daily temperature records. The Arizona sun behind a palm tree in June 2021.

Average temperature in phoenix arizona