PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE BILLINGS MT 621 PM MST MON JAN 4 2010 ..2009 YEAR IN REVIEW FOR BILLINGS... BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION STATISTICS FOR BILLINGS FOR 2009. ALL TEMPERATURES ARE IN DEGREES FAHRENHEIT AND ALL PRECIPITATION AMOUNTS ARE IN INCHES. NORMALS ARE 30 YEAR AVERAGES CALCULATED FROM 1971 TO 2000. RECORDS STARTED BEING RECORDED FOR THE BILLINGS AIRPORT IN 1934 AND ARE LISTED IF IN THE TOP 20. ..BILLINGS MONTHLY PRECIPITATION... MONTH NORMALS 2009 VALUES DEPARTURE RECORD JANUARY 0.81 0.43 -0.38 FEBRUARY 0.58 0.37 -0.21 MARCH 1.12 1.36 +0.24 APRIL 1.74 1.83 +0.09 MAY 2.48 0.64 -1.84 4TH DRIEST JUNE 1.89 1.55 -0.34 JULY 1.28 0.61 -0.67 AUGUST 0.85 1.20 +0.35 14TH WETTEST SEPTEMBER 1.34 0.65 -0.69 18TH DRIEST+ OCTOBER 1.26 1.45 +0.19 NOVEMBER 0.75 0.17 -0.58 10TH DRIEST+ DECEMBER 0.67 0.65 -0.02 YEAR 14.77 10.91 -3.86 13TH DRIEST +RECORD TIED ..BILLINGS 2009 TOP 3 DAILY MAXIMUM PRECIPITATION... 0.73 OCTOBER 5 0.48 APRIL 3 0.41 JUNE 20 ALL TIME RECORD...2.91 ON JUNE 8 1997 ..BILLINGS MONTHLY SNOWFALL... MONTH NORMALS 2009 VALUES DEPARTURE RECORD JANUARY 10.9 9.1 -1.8 FEBRUARY 6.5 10.1 +3.6 MARCH 10.3 16.9 +6.6 12TH SNOWIEST APRIL 7.6 5.5 -2.1 MAY 1.8 TRACE -1.8 JUNE TRACE TRACE 0.0 JULY 0.0 0.0 0.0 AUGUST TRACE 0.0 0.0 SEPTEMBER 1.3 0.0 -1.3 OCTOBER 4.2 6.6 +2.4 17TH SNOWIEST NOVEMBER 7.5 1.4 -6.1 15TH LEAST SNOWIEST DECEMBER 8.9 15.3 +6.4 12TH SNOWIEST YEAR 59.0 64.9 +5.9 +RECORD TIED ..BILLINGS 2009 TOP 3 DAILY MAXIMUM SNOWFALL... 4.7 DECEMBER 23 4.6 OCTOBER 5 4.2 FEBRUARY 26 ALL TIME RECORD...23.7 ON APRIL 4 1955 ..BILLINGS AVERAGE TEMPERATURES... MONTH NORMALS 2009 VALUES DEPARTURE RECORD JANUARY 24.0 29.7 +5.7 20TH WARMEST+ FEBRUARY 29.8 33.7 +3.9 19TH WARMEST MARCH 37.0 33.8 -3.2 APRIL 46.1 45.3 -0.8 MAY 55.7 57.3 +1.6 18TH WARMEST+ JUNE 65.2 61.7 -3.5 20TH COLDEST JULY 72.0 71.2 -0.8 18TH COLDEST AUGUST 70.9 70.2 -0.7 SEPTEMBER 59.5 66.7 +7.2 2ND WARMEST OCTOBER 48.1 41.2 -6.9 2ND COLDEST+ NOVEMBER 34.1 41.7 +7.6 7TH WARMEST DECEMBER 26.1 16.5 -9.6 3RD COLDEST YEAR 47.1 47.5 +0.1 +RECORD TIED .BILLINGS AVERAGE HIGH TEMPERATURES... MONTH NORMALS 2009 VALUES DEPARTURE RECORD JANUARY 32.8 39.2 +6.4 18TH WARMEST FEBRUARY 39.5 43.4 +3.9 19TH WARMEST MARCH 47.6 44.9 -2.7 APRIL 57.5 55.7 -1.8 MAY 67.4 70.6 +3.2 19TH WARMEST JUNE 78.0 73.4 -4.6 20TH COLDEST+ JULY 85.8 84.8 -1.0 18TH COLDEST AUGUST 84.5 83.8 -0.7 SEPTEMBER 71.8 82.1 +10.3 2ND WARMEST OCTOBER 58.9 49.9 -9.0 2ND COLDEST NOVEMBER 42.7 52.6 +9.9 7TH WARMEST DECEMBER 34.5 24.6 -9.9 3RD COLDEST YEAR 58.4 58.8 +0.4 +RECORD TIED ..BILLINGS AVERAGE LOW TEMPERATURES... MONTH NORMALS 2009 VALUES DEPARTURE RECORD JANUARY 15.1 20.1 -0.5 FEBRUARY 20.1 24.0 +1.3 19TH WARMEST+ MARCH 26.4 22.7 +0.1 APRIL 34.7 35.0 -3.5 MAY 44.0 43.9 +0.2 JUNE 52.5 50.0 -1.7 18TH COLDEST JULY 58.3 57.5 +0.9 AUGUST 57.3 56.6 -0.1 SEPTEMBER 47.1 51.4 -0.9 7TH WARMEST OCTOBER 37.2 32.6 +1.1 4TH COLDEST+ NOVEMBER 25.6 30.9 +6.8 9TH WARMEST DECEMBER 17.7 8.4 -7.0 4TH COLDEST YEAR 36.3 36.1 -0.2 ..BILLINGS 2009 TOP 3 WARMEST HIGH TEMPERATURES... 100 JULY 23 97 JUNE 25 96 AUGUST 12 ALL TIME RECORD...108 ON JULY 14 2002 ..BILLINGS 2009 TOP 3 COLDEST HIGH TEMPERATURES... -5 DECEMBER 14 -3 DECEMBER 8 -1 DECEMBER 7 AND 13 ALL TIME RECORD...-21 ON JANUARY 26 1972 ..BILLINGS 2009 TOP 3 WARMEST LOW TEMPERATURES... 70 SEPTEMBER 6 68 JULY 24 66 JULY 19 AND 26 AND AUGUST 22 ALL TIME RECORD...76 ON JUNE 28 1936 .BILLINGS 2009 TOP 3 COLDEST LOW TEMPERATURES... -13 DECEMBER 8 AND 9 -12 DECEMBER 14 -10 MARCH 11 ALL TIME RECORD...-38 ON FEBRUARY 15 1936