The Interior
First Order Stations

Bettles Airport

Big Delta / Allen Army Airfield

Fairbanks International Airport

McGrath Airport

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Station histories
Climate HOME
The Interior region of Alaska has a highly continental climate with the warmest summers in the state, as well as the lowest recorded winter temperatures. Mean annual temperatures average slightly below freezing, with individual years at some stations being above freezing. In general, the Interior ecosystem is spruce-dominated: black spruce and spaghnum moss on poorly drained permafrost with a thin active layer (muskeg) and white spruce on the better drained uplands. Disturbed areas have a fireweed - willow - birch/aspen/alder - spruce succession. Permafrost is discontinuous and easily disturbed by fire or human activity. Tree line is on the order of 3000 ft elevation or lower, sloping downward toward the west and north.
Technically the region is bounded by the watersheds of the Brooks Range to the north and the Alaska Range to the south. In practice, there are no long-term stations above tree line. The climate actually observed is that of the valleys, especially the broad valleys of the Yukon, Tanana and Kuskokwim Rivers. Minimum temperatures are strongly controlled by ground-based inversions, and thus may vary radically over short distances and in response to human modification of the local environment.
Need data for any of these stations? Contact the center by email or phone, or go to the Alaska Climate Data page.

OBSERVING STATIONS - Period of record given in parenthesis, which denotes start and end year of operation. Data may not be complete throughout the period, however, and may include significant data gaps. Boldface type indicates stations currently operating.
ALLAKAKET (1907 - 1982) ESTER 4 S (2000 - present) MOOSE MOUNTAIN (1999)
ANDERSON (1997 - 2001) ESTER 5 NE (1997 - present) MOUNT MCKINLEY NATL (1975 - 76)
ARCTIC VILLAGE (1962 - 96) ESTER 6 NE (2000 - present) NENANA AIRPORT (1916 - 99)
BEAVER (1996 - 2000) ESTER DOME (1999 - present) NIKOLAI (1927 - 76)
BETTLES CAA (1944 - 51) FAIRBANKS 19 N (2000 - 01) NORTH POLE (1968 - present)
BOUNDARY (1947 - 57) FAIRBANKS AP #2 (1999 - present) NORTHWAY AIRPORT (1942 - present)
CANTWELL 2 E (1983 - present) FAIRBANKS MIDTOWN (1997 - 2000) NULATO (1917 - 44)
CATHEDRAL BLUFFS (1968 - 70) FAREWELL FAA AP (1941 - 73) PEARL CREEK (1997 - 98)
CENTRAL NO 2 (1947 - present) FAREWELL LAKE (1985 - present) PORT ALCAN (1985 - 2000)
CHALKYITSIK (1962 - 72) FIVE MILE (1970 - 80) PROSPECT CREEK (1970 - 80)
CHANDALAR LAKE (1968 - present) FLAG HILL (1996 - 1997) RAMPART (1900 - 33)
CHANDALAR DOT (2000 - present) FORT KNOX MINE (2000 - present) RAMPART 2 (1963 - 78)
CHENA HOT SPRINGS (1962 - 78) FORT YUKON (1899 - 1990) RICHARDSON (1917 - 71)
CHENA RIDGE (1999 - present) FOX 2 SE (1999 - present) RIKAS LANDING (1969 - 82)
CHICKEN (1953 - present) FOX 3 SE (1999 - 2001) RUBY WEST (1999 - 2000)
CIRCLE CITY (1900 - 99) GALENA (1996 - present) SALCHA (1919 - 2001)
CIRCLE HOT SPG (1935 - present) GALENA AP (1942 - 93) SALCHA GRAVEL BAR (1996 - 97)
CLEAR 4 N (1965 - 91) GILMORE CREEK (1962 - present) SILVER BIRCH ESTATES (1996 - 98)
CLEARWATER (1964 - 94) GOLDSTREAM (1996 - present) SUMMIT WSO AP (1905 - 76)
COLDFOOT (1993 - 95) HEALY (1920 - 45) TANACROSS (1941 - present)
COLDFOOT CAMP (1970 - 77) HEALY 2 NW (1976 - present) TANANA (1902 - 77)
COLLEEN RIVER (1962 - 68) ILLINOIS CREEK (1991 - present) TANANA AIRPORT (1902 - present)
COLLEGE 5 NW (1976 - present) INDIAN MOUNTAIN (1966 - 85) TATALINA (1953 - 84)
COLLEGE OBSV (1948 - present) KEYSTONE RIDGE (1996 - present) TATALINA RIVER (1999)
CRESTLINE (1996 - 2000) KOBE HILL (2000 - present) TELIDA (1999 - 2004)
CROOKED TEAPOT (1971 - 73) LITTLE CHENA #2 (1996 - 97) THE HARRIS S (1971 - 74)
DELTA 5 NE (1994 - present) LITTLE CHENA #3 (1996 - 2002) TOK (1954 - present)
DELTA 6 N (1996 - present) LIVENGOOD (1933 - present) TOK DOT (1997 - 2001)
DELTA FOREST EXP STN (1996-97) MANLEY HOT SPGS (1909 - present) TRIMS CAMP (1953 - 79)
DELTA JUNCTION (1966 - 69) MCKINLEY PARK (1923 - 2002) TWO RIVERS (1992 - present)
DELTA JCTN 20 SE (1995 - present) MILE 101 STEESE (1987 - 90) UNIVERSITY EXP STN (1904 - present)
DELTA JCTN 4 SE (1984 - 85) MILE 39 STEESE (1998 - 2000) VENETIE (1997)
DOT LAKE (1964 - 75) MILE 41 STEESE (1972 - 77) WHITESTONE FARMS (1996 - present)
DRY CREEK (1996 - present) MILE 42 STEESE (1996 - present) WILD LAKE (1955 - 60)
EAGLE (1901 - present) MINCHUMINA (1945 - 92) WISEMAN (1919 - present)
EIELSON FIELD (1946 - present) MINERAL LAKES (1996 - 99) WONDER LAKE (1925 - 73)
EIELSON VISITOR CTR (1971 - 73) MOOSE CREEK (1996 - 2001) WOODSMOKE (1996 - 2003)
ESTER (2003 - present)