
Hazardous heat will continue across the Southern Plains, Gulf Coast and Desert Southwest through the weekend. Additional heat will build into the Great Basin and Northern Plains this weekend. A stalled front is expected to bring periods of heavy to excessive rainfall and flooding from the Tennessee Valley to the Southeast U.S on Friday. Read More >
Normal Monthly Number of Days With Precipitation
of 0.5, 1.0, 2.0, and 4.0 Inches or More
These images were scanned from a copy of
TECHNICAL PAPER NO. 57
Normal Monthly Number of Days with Precipitation of 0.5, 1.0, 2.0, and 4.0 Inches of Rainfall or More in the Conterminous United States
(published in 1966)
This report provides, in a series of monthly maps, generalized estimates of the normal number of 24-hour periods with precipitation equal to or greater than 0.50, 1.00, 2.00, and 5.00 in. Data used in this report are for the period 1931-60. This period was selected to conform with the World Meteorological Organization standard for Climatological Normals. For convenience, the word "days" is used interchangeably with the more precise term "24-hour periods." In all cases, "days" should be thus interpreted and not confined to any other clock or calendar restriction.
| Cover and Title Pages | |||||
| COVER | PREFACE | PAGE 1 (Introduction) | PAGE 2 | PAGE 3 | PAGE 4 |
| Month-Rainfall | Number of 24-hr Periods with 0.5" | Number of 24-hr Periods with 1.0" | Number of 24-hr Periods with 2.0" | Number of 24-hr Periods with 4.0" |
| January | January | January | January | January |
| February | February | February | February | February |
| March | March | March | March | March |
| April | April | April | April | April |
| May | May | May | May | May |
| June | June | June | June | June |
| July | July | July | July | July |
| August | August | August | August | August |
| September | September | September | September | September |
| October | October | October | October | October |
| November | November | November | November | November |
| December | December | December | December | December |