I bought the pdf version, so I will post the weather for April for each area.
ZONE 1 NORT HEAST
1st-3rd. No fooling: very unsettled in
the Mid-Atlantic States through New
England, then turning fair. 4th-7th.
More rain arives. 8th-11th. A very
pleasant spell. 12th-15th. Rain unfortunately
coincides with Patriot’s Day
in Massachusetts and Maine. 16th-
19th. Sunny skies. 20th-23rd. Windy
and showery; squalls along the coast;
heavy rain for the Mid-Atlantic States,
then improving weather. 24th-27th.
Sunny and pleasantly mild. 28th-30th.
Heavy rains, followed by clearing skies
ZONE 6 NORTHWEST
1st-3rd. Mainly sunny skies. 4th-7th.
Fair skies, then some showers develop.
8th-11th. Sunshine initially, quickly
turning unsettled for Washington and
Oregon areas east. 12th-15th. Clear,
sunny skies. 16th-19th. Very pleasant,
then a bit breezy and showery. 20th-
23rd. Mostly fair. 24th-27th. Gusty
winds and rains along Pacific Coast.
28th-30th. Very pleasant, mild, and dry.
ZONE 4 NORTH CENTRAL
1st-3rd. Mostly fair. 4th-7th. Pleasant
at first, then showers move over the
Rockies and Plains, followed by fair
skies. 8th-11th. Sunny initially, then
very unsettled weather arrives from
the west to Colorado and the Plains.
12th-15th. Sunny. 16th-19th. Pleasant,
turning unsettled, with showers for
most sections, especially for Kansas.
20th-23rd. Mostly fair. 24th-27th. Very
unsettled for Montana south to Colorado
east. 28th-30th. Pleasantly mild