Climate in Sacramento / The Forecast

This page is all about the changing climate in Sacramento, California, USA.

1. Sacramento’s past, present and future climate

1.1 What is Sacramento’s climate changing from?

1.1 What is Sacramento’s climate changing to?

2. Sacramento’s Climate Forecast

2.1 How hot will it get in Sacramento?

2.2 This is how the climate is changing in Sacramento.

1. Sacramento’s Past, Present and Future Climate

1.1 What is Sacramento’s climate changing from?

This shows the two attributes that best describes Sacramento's Mediterranean climate. Graphic.

Sacramento’s climate is currently classified as Hot Summer Mediterranean, which has mild, rainy winters, and warm/hot, often rainless summers. The local climate here has been more or less the same for tens of thousands of years.

Wikipedia: en.wikipedia.org/wiki/Köppen_climate_classification

1.2 What is Sacramento’s climate changing to?

These are three attributes of Sacramento's coming so-called Calescent climate. Graphic.

Sacramento is trending toward a much hotter, much drier climate – something that could tentatively be called “Torrid-Summer Calescent.” Latin for “getting hot,” calescent describes the reality of Sacramento’s emerging climate. This climate will feature extremely hot, long summers, and winters that are actually warm. Sacramento will get little rain throughout the year, but super-heavy damaging rainstorms will pound the City for a few days every few months, years, or decades.

The impacts will be difficult (see Section 2). Visually, the landscape around Sacramento will begin to look more barren, with less and less variety of plant and animal life.

As new atmospheric patterns accelerate, especially during the 2040s and 2050s, scientists will be able to assign a climatological name to Sacramento’s emerging climate type. Scientists expect the characteristics of this new climate to be unlike any that currently exist on Earth.

Dictionary: Calescent. adjective (comparative more calescent, superlative most calescent): increasing in warmth, getting hot. from Webster’s New World College Dictionary, Fifth Edition Copyright © 2014 

LocalClimate.org conjecture based on State Govt Report: Sacramento Valley Report. California’s Fourth Climate Change Assessment (2018)  Hall, Alex; Berg, Neil; Reich, Katharine. (University of California, Los Angeles)  Publication number: SUM-CCCA4-2018-007

2. Sacramento’s Climate Forecast

The usual weather (the climate) of Sacramento has been changing over the past several decades, and the change has been accelerating – especially since the 1990s. Here’s how the climate is trending in Sacramento, California, “The City of Trees.”

2.1 This is how hot it will get in Sacramento.

This shows how hot it will get in the Coachella Valley because of the changing climate. Graphic.

Highest Temp Projected: 128˚ is the highest temp projected thru this century for Sacramento, starting in the 2040s.

Highest Temp on Record: 113˚ is, so far, Sacramento’s highest temp on record, set in July 1972. During the last century, a temp in the 100˚s was very rare. Since the 1990s, temps above 100˚ have become much more common.

Warmest Month: So far, July 2017 is Sacramento’s warmest of the 1,480 or so months since records began. in 1880s.

This shows Sacramento's normal summertime high temperatures, which used to range between 78 and 92 degrees. Graphic.

Normal Temps: In the 1980s, 1990s and 2000s, Sacramento’s normal temp during July was 92.˚

Scientists: Cal-Adapt (Geospatial Innovation Facility, University of California, Berkeley).   Method: CalAdapt Data Visualization Tool for Projections of  Extreme Heat under High Emissions Scenario 8.5 (“Business as Usual” /  “Growing Pace,” where Emissions continue to rise strongly through 2050 and plateau around 2099).   Data: LOCA Downscaled Climate Projections (Scripps Institution of Oceanography), Gridded Historical Observed Meteorological and Hydrological Data (University of Colorado, Boulder).  

Official Records: National Weather Service (NWS) and National Oceanic and Atmospheric Administration (NOAA) Climate Data for Midtown Sacramento, 19812010 averages   

Note: All LocalClimate.org temperature readings in the U.S. are shown in Fahrenheit F˚ degrees. Also Note: Daily High Temps (aka Daytime High Temps) are the highest temp reached on a given day, usually occurring in the late afternoon. 

2.2 This is how Sacramento‘s climate is changing.

2.2.1 Long, scorching Summers are becoming the norm in Sacramento.

This shows how Sacramento's summertime is getting much longer and much hotter as the decades go by. Extremely hot days are coming earlier in the spring and later in the fall. Graphic.

Longer Hotter Summertimes: The 2020s – 2040s and 2070s – 2090s timelines here show Sacramento’s emerging new heat season. Atmospheric scientists are calling this extended period of high heat a “Super Summer.”

Scientists: Cal-Adapt (Geospatial Innovation Facility, University of California, Berkeley).   Method: CalAdapt Data Visualization Tool for Projections of  Extreme Heat under High Emissions Scenario 8.5 (“Business as Usual” /  “Growing Pace,” where Emissions continue to rise strongly through 2050 and plateau around 2099).   Data: LOCA Downscaled Climate Projections (Scripps Institution of Oceanography), Gridded Historical Observed Meteorological and Hydrological Data (University of Colorado, Boulder).  

State Govt Report: Sacramento Valley Report. California’s Fourth Climate Change Assessment (2018)  Hall, Alex; Berg, Neil; Reich, Katharine. (University of California, Los Angeles)  Publication number: SUM-CCCA4-2018-007

2.2.2 Quintuple the number of extreme heat days in Sacramento and you get seven weeks of roasty weather.

This shows Sacramento's high temperatures steadily rising as the decades go by. Graphic.

Extremely hot daytime high temps during the summer months have been on the increase and will continue to rise as time goes on. The 5 days of extremely hot summertime temps in the 1990s is lengthening to 25 days in the 2050s.

Scientists: Cal-Adapt (Geospatial Innovation Facility, University of California, Berkeley).  Method: CalAdapt Data Visualization Tool for Projections of  Extreme Heat under High Emissions Scenario 8.5 (Growing Pace / Business as Usual scenario) where Emissions continue to rise strongly through 2050 and plateau around 2100), and Low Emissions Scenario 4.5 (Quickly Reduced / Carbon Mitigation scenario) where emissions peak around 2040, then decline.)  Data: LOCA Downscaled Climate Projections (Scripps Institution of Oceanography), Gridded Historical Observed Meteorological and Hydrological Data (University of Colorado, Boulder).