TRINITY RIVER HATCHERY, CALIFORNIA

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(049026)

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1974 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 41.00 35.00 30.00 28.00 ----- z 28.00
1975 17.00 21.00 23.00 24.00 29.00 35.00 40.00 41.00 41.00 26.00 21.00 21.00 17.00
1976 18.00 20.00 25.00 24.00 34.00 37.00 37.00 43.00 41.00 28.00 21.00 24.00 18.00
1977 18.00 24.00 24.00 29.00 30.00 40.00 42.00 46.00 42.00 33.00 21.00 26.00 18.00
1978 26.00 26.00 29.00 30.00 33.00 39.00 46.00 41.00 32.00 25.00 20.00 15.00 15.00
1979 14.00 19.00 28.00 28.00 33.00 37.00 46.00 46.00 42.00 33.00 25.00 23.00 14.00
1980 15.00 26.00 25.00 26.00 31.00 35.00 44.00 44.00 36.00 30.00 24.00 20.00 15.00
1981 30.00 26.00 28.00 30.00 31.00 35.00 40.00 46.00 39.00 32.00 30.00 31.00 26.00
1982 18.00 18.00 25.00 27.00 31.00 33.00 43.00 45.00 34.00 34.00 25.00 23.00 18.00
1983 23.00 29.00 31.00 26.00 28.00 40.00 40.00 48.00 38.00 36.00 29.00 24.00 23.00
1984 21.00 26.00 28.00 28.00 33.00 35.00 46.00 46.00 32.00 29.00 28.00 25.00 21.00
1985 24.00 22.00 20.00 31.00 31.00 42.00 45.00 ----- z 38.00 28.00 19.00 19.00 19.00
1986 29.00 23.00 29.00 29.00 29.00 41.00 42.00 ----- z 37.00 31.00 27.00 29.00 23.00
1987 14.00 21.00 26.00 26.00 31.00 38.00 39.00 43.00 37.00 33.00 24.00 18.00 14.00
1988 25.00 22.00 23.00 ----- z 27.00 37.00 40.00 45.00 34.00 33.00 26.00 22.00 22.00
1989 23.00 10.00 23.00 34.00 33.00 42.00 42.00 42.00 40.00 28.00 26.00 22.00 10.00
1990 23.00 16.00 26.00 32.00 33.00 38.00 43.00 46.00 43.00 29.00 26.00 4.00 4.00
1991 16.00 27.00 26.00 28.00 29.00 37.00 50.00 46.00 41.00 28.00 21.00 24.00 16.00
1992 24.00 27.00 33.00 29.00 38.00 44.00 49.00 43.00 37.00 34.00 25.00 25.00 24.00
1993 20.00 22.00 27.00 28.00 35.00 39.00 44.00 40.00 35.00 35.00 15.00 23.00 15.00
1994 25.00 22.00 28.00 31.00 38.00 37.00 48.00 45.00 41.00 28.00 24.00 26.00 22.00
1995 31.00 25.00 29.00 28.00 36.00 35.00 47.00 43.00 38.00 28.00 25.00 28.00 25.00
1996 26.00 24.00 26.00 31.00 33.00 40.00 45.00 40.00 37.00 27.00 28.00 25.00 24.00
1997 16.00 26.00 26.00 25.00 31.00 41.00 46.00 49.00 38.00 28.00 35.00 20.00 16.00
1998 30.00 30.00 27.00 28.00 33.00 42.00 48.00 45.00 41.00 29.00 32.00 9.00 9.00
1999 26.00 26.00 25.00 23.00 31.00 35.00 39.00 38.00 37.00 32.00 29.00 27.00 23.00
2000 27.00 29.00 27.00 32.00 32.00 39.00 46.00 46.00 35.00 30.00 23.00 26.00 23.00
2001 20.00 20.00 27.00 26.00 38.00 38.00 45.00 48.00 40.00 31.00 30.00 27.00 20.00
2002 21.00 24.00 21.00 29.00 31.00 37.00 48.00 42.00 39.00 23.00 23.00 30.00 21.00
2003 32.00 21.00 30.00 30.00 33.00 42.00 47.00 45.00 37.00 29.00 22.00 27.00 21.00
2004 21.00 26.00 33.00 30.00 36.00 37.00 49.00 45.00 ----- z ----- z 25.00 23.00 21.00
2005 30.00 27.00 27.00 29.00 38.00 40.00 47.00 47.00 36.00 28.00 27.00 23.00 23.00
2006 29.00 18.00 27.00 31.00 37.00 a 46.00 a 47.00 j ----- z ----- z ----- z ----- z ----- z 18.00
Period of Record Statistics
MEAN 22.88 23.22 26.62 28.45 32.69 38.53 44.29 44.17 37.84 29.94 25.12 22.87 18.33
S.D. 5.33 4.23 2.96 2.59 3.04 2.99 3.46 2.67 2.92 3.02 4.07 5.63 5.33
SKEW -0.03 -0.92 0.05 -0.19 0.32 0.40 -0.33 -0.38 -0.18 0.03 -0.01 -1.62 -0.78
MAX 32.00 30.00 33.00 34.00 38.00 46.00 50.00 49.00 43.00 36.00 35.00 31.00 26.00
MIN 14.00 10.00 20.00 23.00 27.00 33.00 37.00 38.00 32.00 23.00 15.00 4.00 4.00
NO YRS 32 32 32 31 32 32 31 30 31 31 32 31 27