National Weather Service United States Department of Commerce

2019 Climate for Rochester

  Temperatures Precipitation
Month High Low Average Departure Total Departure Snow
January 19.7 4.4 12.1 -3.6 1.23 +0.37 18.5
February 20.3 2.4 11.3 -9.0 -9.0 +2.14 40.0
March 33.9 17.9 25.9 -6.5 1.47 -0.41 4.8
April 54.6 35.1 44.8 -1.9 3.93 +0.69 8.2
May 63.5 44.3 53.9 -4.2 9.42 +5.79 0.0
June 76.0 56.5 66.3 -1.3 9.08 +4.40 ...
July 81.7 62.6 72.2 +0.8 7.38 +2.83 ...
August 76.7 56.7 66.7 -2.4 1.54 -2.98 ...
September 74.7 55.5 65.1 +4.2 8.35 +4.90 ...
October 52.1 35.6 43.0 -4.5 5.71 +3.47 0.3
November 34.6 21.5 28.1 -5.8 2.89 +0.98 13.1
December 29.2 13.9 21.5 +1.8 1.19 -0.04 7.1
TOTALS: 51.4 33.9 42.6 =2.8 55.16 +22.14 ***
*** Seasonal snowfall is recorded from July-June (overlapping years), not yearly. ***




  • 89 on September 30th 


  • -17 on March 3rd, tied with 1913
  • -7  on March 4th 
  • 0 on November 8th 

Highest Lows:

  • 35 on February 3rd
  • 69 on September 21st 

Lowest Highs:

  • -19 on January 30th
  • 2 on February 25th , tied with 1887
  • -1 on March 3rd
  • 3 on March 4th
  • 57 on September 8th
  • 35 on October 12th, tied with 2009


  • 6th warmest September 21st 


  • None


  • None


One-day pcpn:

  • 0.55” on January 18th
  • 0.31” on February 12th
  • 0.89” on February 23rd
  • 3.33” on May 27th
  • 4.90” on June 28th
  • 1.69” on September 2nd
  • 1.48” on October 1st
  • 1.38” on October 5th
  • 0.53” on December 28th

One-day snowfall:

  • 8.1” on January 18th
  • 5.1” on January 27th
  • 4.2” on February 7th
  • 5.7” on February 12th
  • 10.1” on February 23rd
  • 4.1” on April 10th
  • 2.1” on April 27th
  • 4.1” on November 6th
  • 4.4” on November 26th

Monthly pcpn:

  • Wettest February with 2.97”
  • 2nd wettest May with 9.42”
  • 4th wettest June with 9.08”
  • 8th wettest July with 7.38”
  • 12th driest August with 1.54”
  • 4th wettest September with 8.35”
  • 4th wettest October with 5.71”

Monthly snowfall:

  • All-time snowiest February with 40.0”
  • 11th snowiest April with 8.2”
  • 8th snowiest November with 13.1”

Seasonal precipitation:

  • All-time wettest Winter (Dec-Feb) with 6.30”
  • 4th wettest Spring (Mar-May) with 14.89”
  • 11th wettest Summer (Jun-Aug) with 18.00”
  • All-time wettest Fall (Sep-Nov) with 16.95”
  • 7th snowiest Fall at 13.1”

Yearly precipitation:

  • Wettest year on record with 55.16"
  • Snowiest season on record (2018-19) with 86.8”

January kicked off 2019 on a very mild note with above normal temperatures on 14 of the first 17 days. The second half the month would see a return of cold air, with a significant arctic outbreak at month’s end. Highs never warmed out of the single digits after the 24th, while temperatures never made it above zero from the night of the 29th into the morning of February 1st. The mild start helped offset the very cold end to the month a bit as January finished a few degrees below its normal. Precipitation was right around normal, although there wasn’t any measurable snow through the first 2 weeks of the month. After the 16th, there were 8 days with measurable snow, with over half of that total falling on the 18th (8.1”). 


RST Jan Temp 2019

February would bring a short break from the cold starting on the 2nd with 3 consecutive days with highs hovering around 40. Temperatures took another tumble after that, averaging below normal on 21 of the remaining 24 days. The average temperature for the month of 11.3 degrees was 9 degrees below normal. In addition, there were 14 days with below zero lows – tied for 10th most in a February. It was a very wet February. Measurable precipitation fell on 14 days, tying it for most in a February (average is only 7). Of those, 1/10 of an inch or greater fell on 10 days – also the most in a February. The 2.97” total for the month set a new record for the wettest February in Rochester. Snow came often and was plentiful. There was an inch or more on 10 days (a record for February), with 3 inches or more on 6 of those (also a February record). The monthly total of 40.0” destroyed the previous record for February by doubling it (old was 20.1” in 2007) and also made it the 2nd snowiest of any month. In addition, the 40 inches accounted for 77% of what falls in a normal year in Rochester (51.9”).

RST Feb Temp 2019

The February cold continued through the first week of March. The average temperature for the first 7 days was only 3.4 degrees which made it the coldest first week for a March. Temperatures would moderate after that, mostly holding a few degrees above and below the normal. Still, the cold start left the average temperature for the entire month 6 ½ degrees below normal. Precipitation was almost ½ inch below normal, most of which fell within the first half of March. After the 14th, there was only 1 day with measurable precipitation, and that was just 0.01” on the 24th. Snowfall was about half of what normal falls and there were only 5 days of measurable snow. Out of those, the 3.1” on 1st accounted for the bulk of the monthly total.  

RST Mar Temp 2019

April was fairly typical for a spring month with cold and mild stretches. For instance, highs were in the 60s and 70s for the 6th through the 9th, but then didn’t reach 40 on the 10th through the 13th. Overall, highs were in the 30s and 40s on 10 days (normal) and in the 60s and 70s for 12 days (also normal). The first 80 degree day of 2019 occurred in April with 83 on the 21st – about 2 weeks earlier than average. The last freeze of the spring came on the 28th (low of 27 degrees), a about a week early compared to when that usually occurs. Precipitation was over ½ inch above normal for April, most of it coming in small amounts here and there. Measurable precipitation fell on 16 days, tied for 5th most in an April, but less than ¼ of an inch fell on 10 of those. The last snowfall for the 2018-19 would fall on the 27th with 2.1” – well past the average of April 10th for the last snowfall in a season. 

Snowfall for the 2018-19 season (July through June) was 86.8 inches, greatest on record for Rochester (besting the previous high of 85.1” for the 1996-97 season). 

RST Apr Temp 2019

May continued the cold start to 2019 averaging 4 degrees below its normal. That said, there were no significant cold stretches, or warm for that matter. Temperatures were below normal on 22 days but still managed to reach 70 degrees or warmer on 8 days, even climbing to 86 on the 31st. It was a very wet month, with the rainfall having a hand in keeping May on the cool-side. Measurable rain fell on over half the days (16) with generally no more than a few days in between rain. Over an inch fell on 4 of those days – tied for 2nd most in a May. The 9.42” total made it the 2nd wettest on record for a May in Rochester and 11th most out of any month.

Rainfall for the spring months (Mar-May) came to 14.82 inches, 4th most in a spring in Rochester.

RST May Temp 2019

June was right around its normal for temperatures with no significant swings warm or cold. For the most part, average temperatures hovered plus/minus 5 degrees of the daily normal. June was another very wet month, finishing almost 4 ½ inches above normal with the 9.08” total making it the 4th wettest on record. There was measurable rainfall on 15 days, tied for 9th most in a June. Meanwhile, one day accounted for over half of the monthly total with nearly 5” falling on the 28th (4.90”)! Not only is that a record for the 28th, but it was also the 6th wettest out of any day for Rochester.

RST Jun Temp 2019

A bit more summer warmth for July, but again, daily temperatures generally hovered a few degrees around the normal. Highs did reach 90 for the first and only time in 2019, but just barely at that with 90 degrees on the 19th. For comparison, there are only 5 years when Rochester never even warmed that much. On average, 90 degrees is reached on 11 days. Another soggy month for Rochester with 7.38” falling, nearly 3 inches above normal and 8th most for a July. Out of the 11 days with measurable rain, 6 of those had more than ½ inch, tied for 3rd most in a July. A thunderstorm would bring the peak wind of 2019 for Rochester - a northerly gust at 74 mph on the 20th.

RST Jul Temp 2019

August would kick off with a week’s worth of warmth, but temperatures would then cool down with below average temperatures on 19 of the last 24 days. August would also dry out after the soggy start to the summer that June and July brought. There were only 9 days with measurable precipitation (average is 10) with 7 of those days accumulating less than ½ inch. The monthly total of 1.54 inches was 3 inches below normal and the 12th driest August on record.

Despite the dry August, the wet start to the summer would help it finish at 18.00”, 11th wettest summer on record for Rochester.

More so, excluding August and taking the period of May-July, the total rainfall over those 3 months was 25.88 inches, 2nd wettest 3 month period on record for Rochester, just missing the all-time record by 0.04” (25.91” for Apr-Jun of 2013). 

RST Aug Temp 2019

September got the traditional fall months off to a warm and wet start. Temperatures climbed to 80 degrees or greater 8 times, just missing 90 on the 30th (89). Highs didn’t reach 70 on only 7 days, tied for 11th least for a September in Rochester. In addition, low temperatures cooled into the 40s on only 7 days, 3rd least for a September. Overall, the average temperature of 65.1 degrees was over 4 degrees above normal and made it the 6th warmest September on record. Rain returned in earnest in September. Measurable rains fell on over half of the days (17, tied for 2nd most) with 5 of those recording at least ½ inch (tied for 3rd most). The 8.35” total set yet another monthly rainfall record for Rochester, this time for the 4th wettest September.

RST Sep Temp 2019

The warmth of September would be left in the rearview mirror as the calendar flipped to October. After a pleasant 70 degree day on the 1st, highs would struggle to warm out of the 50s the rest of the month. Temperatures never saw 60 on 22 days (tied for 9th most in an October and well ahead of the 16 day average) and couldn’t even warm to 50 on 12 days. That said, the first freeze of the fall would come on the 11th, about 2 weeks later than average.  October would finish around 4 1/2 degrees below normal at 43.9 degrees (13th coldest). While the warmth didn’t follow, the wetness of September did. Over 5 ½ inches (5.71”) of rain fell in October, making it the 4th wettest on record. The bulk of that fell on 3 days with the 1st, 5th and 21st accumulating 4.32” or 76% of the monthly total. It was also the first time in October that 3 separate days recorded at least 1 ¼” of rain. The end of the month did bring a break from the soggy conditions with no measurable rains after the 22nd. The first snow flurries of the season would fall on the 11th with the first measurable snow the next day, 0.2” on the 12th. This is nearly a month ahead of what occurs in an average year, and 7th earliest first snow accumulations on record for Rochester.  

RST Oct Temp 2019

November kept the cold trend going, more so for the first half of the month. Through the 15th the average temperature was only 23.9 degrees, second coldest 1st half to a November on record. Highs couldn’t warm out of the 20s and 30s on 20 days for the entire month (average is 14) with the first single digit low of the new winter season on the 6th (9 degrees – well ahead of the average of Nov 22nd). The second half of November saw the return of more seasonable to mild temperatures with only 3 colder than normal days after the 15th.  Like the previous two fall months, November continued the wet trend although not nearly as soggy as September and October. Measurable precipitation fell on half the days, tied for 5th most in a November. Amounts were light most days, recording less than 1/10 of an inch on 7 of those. There were 7 days with measurable snow and over 4 inches recorded on the both the 6th and 26th. This was only the 6th time on record for Rochester that 4 or more inches fell on 2 days in November. In addition, the monthly total of 13.1” made it the 8th snowiest November on record.

For the fall months (Sep-Nov) almost 17 inches of precipitation fell with the 16.95” total making it the wettest on record for Rochester. Snowfall came to 13.4”, making it the 7th snowiest fall season.

RST Nov Temp 2019

December would end 2019 on mild note with 12 of the last 13 days averaging above normal. The 27.5 degree average over this span was the 9th warmest on record at Rochester. Despite finishing right around its normal for precipitation, it was a fairly dry month. There were only 5 days with measurable precipitation through the 27th, with 2 days of rain on the 28th and 29th then accounting for 60% of the monthly total. Snowfall suffered as a result of the lack of wet days and mild conditions. There were only 5 days with measurable snow in Rochester with just one of those accounting for more than 2 inches.

RST Dec Temp 2019

2019 will be remembered for its unprecedented precipitation for Rochester. Not only was it the wettest year on record at 55.16 inches, but it obliterated the previous record by over 11 inches. Further, it bested the annual normal by over 22 inches! There were 150 days with measurable precipitation (all time record and well above the average of 113), 34 of those recording ½ inch or greater (all time record) and over 1 inch on 16 of those (most in a year). It was also an exceedingly snowy start to the year with 71.5 inches falling over the first 4 months (highest for the start to a year in Rochester). All the rain kept temperatures cool for 2019 with only 3 months averaging above normal.

RST Annual Temp and Precipitation 2019


Highest temperature for 2019 90 on July 19th 
Lowest temperature for 2018 -30 on January 31st 
Highest one-day precipitation 4.90 inches on June 28th
Highest one-day snowfall 10.1 inches on February 23rd
Number of days with highs at or above 90 degrees 1
Number of days with highs at or below 32 degrees 90
Number of days with zero or below temperatures 39
Peak wind gust 74 mph from the N on July 20th
Number of days with measurable precipitation 150
Percentage of days with measurable precipitation 41%
Number of days with above normal temperatures 141
Percentage of days with above normal temperatures 39%