Year Day Mean Air Temp (in K). 1980 275 286.179993 1980 276 284.200012 1980 277 286.779999 1980 278 283.709991 1980 279 284.730011 1980 280 284.299988 1980 281 281.649994 1980 282 280.959991 1980 283 281.149994 1980 284 282.779999 1980 285 281.959991 1980 286 281.829987 1980 287 282.149994 1980 288 282.010010 1980 289 282.010010 1980 290 280.380005 1980 291 280.809998 1980 292 281.760010 1980 293 284.350006 1980 294 285.529999 1980 295 285.829987 1980 296 284.410004 1980 297 282.980011 1980 298 282.679993 1980 299 284.510010 1980 300 286.679993 1980 301 286.630005 1980 302 284.459991 1980 303 281.980011 1980 304 283.260010 1981 274 284.709991 1981 275 280.799988 1981 276 283.049988 1981 277 284.410004 1981 278 282.529999 1981 279 282.679993 1981 280 284.010010 1981 281 286.980011 1981 282 282.899994 1981 283 282.209991 1981 284 281.980011 1981 285 281.109985 1981 286 280.600006 1981 287 279.679993 1981 288 278.429993 1981 289 279.079987 1981 290 280.630005 1981 291 283.829987 1981 292 285.899994 1981 293 280.779999 1981 294 281.950012 1981 295 282.380005 1981 296 284.260010 1981 297 281.899994 1981 298 280.380005 1981 299 282.510010 1981 300 280.380005 1981 301 282.179993 1981 302 281.179993 1981 303 284.429993 1982 274 286.829987 1982 275 285.260010 1982 276 285.279999 1982 277 283.929993 1982 278 283.429993 1982 279 285.049988 1982 280 282.359985 1982 281 284.399994 1982 282 283.529999 1982 283 282.549988 1982 284 284.380005 1982 285 284.299988 1982 286 284.230011 1982 287 282.609985 1982 288 283.200012 1982 289 285.579987 1982 290 284.079987 1982 291 283.429993 1982 292 286.179993 1982 293 283.880005 1982 294 282.510010 1982 295 280.630005 1982 296 281.829987 1982 297 283.179993 1982 298 283.929993 1982 299 283.380005 1982 300 283.929993 1982 301 285.459991 1982 302 286.429993 1982 303 286.429993 1983 274 288.010010 1983 275 288.260010 1983 276 289.010010 1983 277 286.760010 1983 278 286.179993 1983 279 287.149994 1983 280 284.279999 1983 281 286.429993 1983 282 286.880005 1983 283 283.179993 1983 284 284.329987 1983 285 286.829987 1983 286 282.959991 1983 287 283.299988 1983 288 283.209991 1983 289 282.329987 1983 290 285.309998 1983 291 286.179993 1983 292 281.829987 1983 293 283.049988 1983 294 284.260010 1983 295 283.029999 1983 296 283.809998 1983 297 281.329987 1983 298 283.549988 1983 299 284.510010 1983 300 283.880005 1983 301 280.929993 1983 302 279.829987 1983 303 284.779999 1984 275 283.149994 1984 276 281.549988 1984 277 281.779999 1984 278 282.679993 1984 279 283.260010 1984 280 284.600006 1984 281 285.959991 1984 282 287.279999 1984 283 284.730011 1984 284 285.529999 1984 285 286.649994 1984 286 286.730011 1984 287 287.480011 1984 288 286.959991 1984 289 285.899994 1984 290 286.429993 1984 291 285.399994 1984 292 284.179993 1984 293 283.179993 1984 294 282.380005 1984 295 286.049988 1984 296 286.149994 1984 297 283.549988 1984 298 285.279999 1984 299 281.799988 1984 300 281.880005 1984 301 284.779999 1984 302 286.380005 1984 303 286.049988 1984 304 284.079987 1985 274 288.799988 1985 275 287.350006 1985 276 285.609985 1985 277 285.149994 1985 278 285.880005 1985 279 284.459991 1985 280 282.859985 1985 281 284.700012 1985 282 285.579987 1985 283 287.779999 1985 284 285.880005 1985 285 286.779999 1985 286 286.700012 1985 287 286.260010 1985 288 285.779999 1985 289 285.010010 1985 290 283.609985 1985 291 282.329987 1985 292 283.450012 1985 293 285.029999 1985 294 284.679993 1985 295 283.459991 1985 296 284.149994 1985 297 285.049988 1985 298 283.429993 1985 299 284.049988 1985 300 284.600006 1985 301 283.130005 1985 302 283.079987 1985 303 282.700012 1986 274 287.429993 1986 275 286.029999 1986 276 286.929993 1986 277 288.049988 1986 278 288.779999 1986 279 288.450012 1986 280 288.549988 1986 281 288.179993 1986 282 287.130005 1986 283 284.109985 1986 284 284.829987 1986 285 285.149994 1986 286 286.209991 1986 287 284.579987 1986 288 283.179993 1986 289 284.130005 1986 290 285.209991 1986 291 283.549988 1986 292 283.200012 1986 293 283.429993 1986 294 285.130005 1986 295 280.679993 1986 296 282.459991 1986 297 283.549988 1986 298 282.329987 1986 299 285.049988 1986 300 287.149994 1986 301 283.260010 1986 302 283.600006 1986 303 282.480011 1987 274 286.459991 1987 275 286.730011 1987 276 287.709991 1987 277 287.350006 1987 278 285.459991 1987 279 283.079987 1987 280 284.429993 1987 281 282.480011 1987 282 281.100006 1987 283 279.980011 1987 284 282.230011 1987 285 283.130005 1987 286 282.410004 1987 287 280.880005 1987 288 279.529999 1987 289 282.510010 1987 290 284.649994 1987 291 283.649994 1987 292 283.149994 1987 293 282.010010 1987 294 281.730011 1987 295 280.149994 1987 296 278.829987 1987 297 280.010010 1987 298 283.859985 1987 299 282.510010 1987 300 280.579987 1987 301 283.329987 1987 302 284.279999 1987 303 284.399994 1988 275 286.529999 1988 276 287.079987 1988 277 286.130005 1988 278 285.279999 1988 279 285.709991 1988 280 283.399994 1988 281 282.130005 1988 282 284.760010 1988 283 281.799988 1988 284 281.859985 1988 285 283.850006 1988 286 282.609985 1988 287 282.380005 1988 288 284.799988 1988 289 285.679993 1988 290 285.410004 1988 291 286.029999 1988 292 287.029999 1988 293 285.179993 1988 294 284.899994 1988 295 285.880005 1988 296 285.049988 1988 297 285.579987 1988 298 285.510010 1988 299 286.549988 1988 300 284.730011 1988 301 283.380005 1988 302 281.600006 1988 303 280.100006 1988 304 280.679993 1989 274 285.630005 1989 275 285.010010 1989 276 285.829987 1989 277 287.510010 1989 278 284.730011 1989 279 287.480011 1989 280 286.779999 1989 281 286.929993 1989 282 285.959991 1989 283 285.829987 1989 284 287.079987 1989 285 287.079987 1989 286 284.380005 1989 287 284.760010 1989 288 287.230011 1989 289 287.679993 1989 290 287.179993 1989 291 286.380005 1989 292 284.880005 1989 293 284.480011 1989 294 284.329987 1989 295 284.130005 1989 296 283.679993 1989 297 285.880005 1989 298 285.510010 1989 299 282.399994 1989 300 285.209991 1989 301 283.429993 1989 302 285.079987 1989 303 284.980011 1990 274 286.799988 1990 275 287.260010 1990 276 282.679993 1990 277 286.149994 1990 278 288.730011 1990 279 285.260010 1990 280 283.399994 1990 281 284.179993 1990 282 287.549988 1990 283 287.630005 1990 284 286.730011 1990 285 287.799988 1990 286 288.130005 1990 287 285.850006 1990 288 284.510010 1990 289 284.529999 1990 290 285.480011 1990 291 284.700012 1990 292 285.579987 1990 293 286.079987 1990 294 286.510010 1990 295 285.200012 1990 296 285.609985 1990 297 283.980011 1990 298 283.929993 1990 299 283.649994 1990 300 283.510010 1990 301 281.109985 1990 302 281.459991 1990 303 282.630005 1991 274 284.959991 1991 275 287.779999 1991 276 284.980011 1991 277 285.149994 1991 278 282.649994 1991 279 285.929993 1991 280 283.350006 1991 281 283.299988 1991 282 284.630005 1991 283 285.549988 1991 284 286.049988 1991 285 286.880005 1991 286 285.049988 1991 287 283.279999 1991 288 285.149994 1991 289 284.399994 1991 290 281.929993 1991 291 280.200012 1991 292 280.929993 1991 293 282.579987 1991 294 284.149994 1991 295 283.880005 1991 296 282.529999 1991 297 281.510010 1991 298 281.649994 1991 299 283.049988 1991 300 284.209991 1991 301 283.130005 1991 302 283.649994 1991 303 283.230011 1992 275 285.929993 1992 276 284.980011 1992 277 284.380005 1992 278 284.929993 1992 279 284.100006 1992 280 284.149994 1992 281 283.899994 1992 282 283.709991 1992 283 284.200012 1992 284 281.929993 1992 285 283.549988 1992 286 282.779999 1992 287 281.959991 1992 288 282.929993 1992 289 281.130005 1992 290 280.510010 1992 291 281.679993 1992 292 280.100006 1992 293 279.880005 1992 294 280.850006 1992 295 281.850006 1992 296 282.809998 1992 297 280.730011 1992 298 282.730011 1992 299 282.010010 1992 300 282.450012 1992 301 279.880005 1992 302 281.279999 1992 303 280.260010 1992 304 279.429993 1993 274 283.880005 1993 275 284.459991 1993 276 284.679993 1993 277 284.049988 1993 278 284.549988 1993 279 282.399994 1993 280 283.510010 1993 281 284.010010 1993 282 284.079987 1993 283 283.679993 1993 284 284.130005 1993 285 283.179993 1993 286 280.579987 1993 287 279.679993 1993 288 279.459991 1993 289 278.760010 1993 290 278.549988 1993 291 279.880005 1993 292 282.760010 1993 293 283.079987 1993 294 280.010010 1993 295 279.579987 1993 296 280.649994 1993 297 282.579987 1993 298 281.859985 1993 299 281.079987 1993 300 281.899994 1993 301 282.049988 1993 302 282.880005 1993 303 281.880005 1994 274 287.429993 1994 275 285.630005 1994 276 281.980011 1994 277 280.279999 1994 278 283.399994 1994 279 285.709991 1994 280 286.429993 1994 281 284.850006 1994 282 285.959991 1994 283 286.730011 1994 284 285.649994 1994 285 286.410004 1994 286 287.209991 1994 287 287.299988 1994 288 287.010010 1994 289 286.760010 1994 290 285.880005 1994 291 285.579987 1994 292 284.880005 1994 293 284.980011 1994 294 284.929993 1994 295 283.899994 1994 296 283.329987 1994 297 282.829987 1994 298 282.679993 1994 299 281.450012 1994 300 282.049988 1994 301 282.850006 1994 302 285.399994 1994 303 285.529999 1995 274 287.100006 1995 275 287.329987 1995 276 286.929993 1995 277 285.010010 1995 278 285.959991 1995 279 287.130005 1995 280 288.529999 1995 281 289.010010 1995 282 286.329987 1995 283 286.359985 1995 284 287.880005 1995 285 287.760010 1995 286 287.829987 1995 287 288.230011 1995 288 288.029999 1995 289 288.700012 1995 290 285.660004 1995 291 284.850006 1995 292 287.459991 1995 293 285.049988 1995 294 285.980011 1995 295 287.350006 1995 296 287.649994 1995 297 284.609985 1995 298 284.399994 1995 299 285.100006 1995 300 281.899994 1995 301 281.399994 1995 302 285.549988 1995 303 287.079987 1996 275 285.529999 1996 276 286.579987 1996 277 285.230011 1996 278 284.100006 1996 279 285.549988 1996 280 287.260010 1996 281 286.799988 1996 282 284.359985 1996 283 284.929993 1996 284 284.100006 1996 285 287.049988 1996 286 287.380005 1996 287 286.829987 1996 288 284.649994 1996 289 281.950012 1996 290 283.130005 1996 291 284.399994 1996 292 284.730011 1996 293 286.700012 1996 294 286.779999 1996 295 285.260010 1996 296 288.049988 1996 297 288.279999 1996 298 285.760010 1996 299 282.649994 1996 300 285.230011 1996 301 286.350006 1996 302 284.600006 1996 303 282.880005 1996 304 284.859985 1997 274 289.149994 1997 275 287.380005 1997 276 287.679993 1997 277 287.279999 1997 278 288.380005 1997 279 284.730011 1997 280 284.359985 1997 281 287.010010 1997 282 286.399994 1997 283 285.529999 1997 284 285.959991 1997 285 283.880005 1997 286 282.829987 1997 287 286.350006 1997 288 287.779999 1997 289 288.529999 1997 290 288.200012 1997 291 288.730011 1997 292 288.510010 1997 293 285.880005 1997 294 285.010010 1997 295 284.850006 1997 296 283.600006 1997 297 283.149994 1997 298 283.899994 1997 299 284.359985 1997 300 285.149994 1997 301 284.209991 1997 302 286.350006 1997 303 284.049988