June, and the heat is on
June is back in Baltimore, and with it comes the likelihood of some really hot weather. The sun reaches its highest arc in June, and record highs poke into the 100-plus range for the first time in the year.
Not that we haven't already seen some heat this year. With all this rain and cloudy weather, it's easy to forget that we had three straight days in the 90s in April. That 90-degree heat wave arrived before we had even seen our first days with highs in the 80s.
The average highs for June in Baltimore rise from 79 degrees on June 1 to 86 degrees by the end of the month. The average lows rise climb from 57 degrees to 64.
Record highs are all in the upper 90s and low 100s during June. The hottest June day on record for the city was 105 degrees on June 29, 1934. Imagine THAT without air-conditioning! The coolest June day never got above 54 degrees. That was on June 1, 1907. The coldest reading in June since record-keeping began in 1871 was 40 degrees, on June 11, 1972. Our low of 46 this morning at the airport was plenty cool, but we can pretty much forget readings in the 30s until fall.
The wettest June day on record was June 28, 1885, when 4.47 inches fell on the city. But the wettest June on record remains June 1972, the month the remnants of Hurricane Agnes blew through town. That June saw 9.95 inches fall at BWI. The driest June was in 1954, with only 0.15 inch at the airport.
The oldest June record still standing was a sweltering June 20, in 1873, when the mercury never fell below 78 degrees.
The earliest sunrise of the year will occur on Sunday, June 14, with Sol rising over Baltimore at 5:39 a.m. EDT.
The Summer Solstice this year occurs a week later, at 1:45 a.m. EDT on Sunday, June 21. The sun will rise here on that day at 5:40 a.m. EDT, setting at 8:37 p.m., providing 14 hours and 57 minutes of sunshine.
May ended last night as the second-wettest on record for Baltimore. The precipitation totaled 8.42 inches. Here's how it stacked up against the wettest Mays:
May 1989: 8.71 inches
May 2009: 8.42 inches
May 2008: 7.77 inches
May 1894: 7.26 inches
May 1960: 7.10 inches
May 1886: 7.07 inches








Comments
2 of the 3 rainiest May's ever recorded in the past two years. I wonder what next years May will bring us?
Posted by: Steve J. | June 1, 2009 1:58 PM
If Joe Bastardi of Accuweather is right, we've already seen the hottest weather we can expect to see this year. I hope Joe's right.
FR: I don't believe that for a second.
Posted by: Bill | June 2, 2009 9:11 AM