Dangerous heat is expected to be in place across portions of California, especially the Central Valley, and across the Interior Northwest into Friday. Heat Advisories will also be in place across the southern Plains into the Lower Mississippi River Valley. Monsoonal showers and thunderstorms may result in flash flooding and debris flows from the Four Corners region and Southwest through Friday. Read More >
These graphs show approximately how the previous package of normals (1981-2010, in blue) compares to the current one (1991-2020, in orange). These graphs directly compare the two datasets. To create a truly equal basis for comparison, one would need to recalculate the old normals with the data management and computation strategies that were used for the new normals. However, according to a spokesperson from the National Centers for Environmental Information (NCEI), the results from using the recalculation technique should not vary significantly from the results of a direct comparison. Once NCEI makes those recalculated normals available, a new comparison can be developed. In the meantime, the direct comparison shown in the following graphs should still give a general impression of how the normals changed from the old package to the new.
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Daily High Temperature | Daily Low Temperature | Daily Average Temperature | |
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Annual Precipitation
Daily High Temperature | Daily Low Temperature | Daily Average Temperature | |
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November | ![]() |
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December | ![]() |
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Annual | ![]() |
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Annual Precipitation
Daily High Temperature | Daily Low Temperature | Daily Average Temperature | |
January | ![]() |
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February | ![]() |
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March | ![]() |
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April | ![]() |
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September | ![]() |
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October | ![]() |
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November | ![]() |
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December | ![]() |
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Annual | ![]() |
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Annual Precipitation
Daily High Temperature | Daily Low Temperature | Daily Average Temperature | |
January | ![]() |
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February | ![]() |
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March | ![]() |
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April | ![]() |
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July | ![]() |
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August | ![]() |
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September | ![]() |
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October | ![]() |
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November | ![]() |
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December | ![]() |
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Annual | ![]() |
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Annual Precipitation
Daily High Temperature | Daily Low Temperature | Daily Average Temperature | |
January | ![]() |
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February | ![]() |
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March | ![]() |
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April | ![]() |
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May | ![]() |
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June | ![]() |
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July | ![]() |
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August | ![]() |
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September | ![]() |
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October | ![]() |
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November | ![]() |
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December | ![]() |
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Annual | ![]() |
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Annual Precipitation