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PRISM Precipitation & Dew Point Climatology Maps

Data courtesy of PRISM Climate Group at Oregon State University         1961-1990 PRISM Precipatation Maps

Precipitation Climatologies
Dew Point Climatologies

Click on the thumbnails below to view or download larger images.

Percent 1981-2010 Annual Average Precipitation by Month: Western US

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

Percent 1981-2010 Annual Average Precipitation by Season: Western US

DJF
December-February
MAM
March-May
JJA
June-August
SON
September-November
ONDJFM
October-March

1981-2010 Annual Average Precipitation by State

AZ
Arizona
CA
California
CO
Colorado
HI
Hawaii
ID
Idaho
MT
Montana

NV
Nevada
NM
New Mexico
OR
Oregon
UT
Utah
WA
Washington
WY
Wyoming

1981-2010 Annual Average Precipitation by Region

rockies_central
Central Rockies
desert_sw
Desert Southwest
grbasin
Great Basin
ca_north
Northern California
rockies_north
Northern Rockies

pacific_nw
Pacific Northwest
ca_south
Southern California
rockies_south
Southern Rockies
us_sw
Southwest
us
United States

us_west
Western US
hi_island
Hawaii Island
maui_county
Maui County
oahu_island
Oahu Island
kauai_island
Kauai Island

1981-2010 Monthly Average Precipitation by State: Arizona

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: California

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: Colorado

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: Hawaii

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: Idaho

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: Montana

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: Nevada

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: New Mexico

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: Oregon

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: Utah

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: Washington

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by State: Wyoming

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Central Rockies

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Desert Southwest

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Great Basin

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Northern California

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Northern Rockies

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Pacific Northwest

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Southern California

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Southern Rockies

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Southwest

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: United States

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Western US

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Hawaii Island

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Maui County

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Oahu Island

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Precipitation by Region: Kauai Island

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

Click on the thumbnails below to view or download larger images.

1981-2010 Annual Average Dew Point by State

AZ
Arizona
CA
California
CO
Colorado
HI
Hawaii
ID
Idaho
MT
Montana

NV
Nevada
NM
New Mexico
OR
Oregon
UT
Utah
WA
Washington
WY
Wyoming

1981-2010 Annual Average Dew Point by Region

rockies_central
Central Rockies
desert_sw
Desert Southwest
grbasin
Great Basin
ca_north
Northern California
rockies_north
Northern Rockies

pacific_nw
Pacific Northwest
ca_south
Southern California
rockies_south
Southern Rockies
us_sw
Southwest
us
United States

us_west
Western US
hi_island
Hawaii Island
maui_county
Maui County
oahu_island
Oahu Island
kauai_island
Kauai Island

1981-2010 Monthly Average Dew Point by State: Arizona

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: California

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: Colorado

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: Hawaii

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: Idaho

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: Montana

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: Nevada

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: New Mexico

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: Oregon

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: Utah

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: Washington

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by State: Wyoming

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Central Rockies

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Desert Southwest

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Great Basin

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Northern California

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Northern Rockies

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Pacific Northwest

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Southern California

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Southern Rockies

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Southwest

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: United States

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Western US

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Hawaii Island

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Maui County

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Oahu Island

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December

1981-2010 Monthly Average Dew Point by Region: Kauai Island

Jan
January
Feb
February
Mar
March
Apr
April
May
May
Jun
June

Jul
July
Aug
August
Sep
September
Oct
October
Nov
November
Dec
December
X