June 2010
North Country Monthly Climate Summary
TEMPERATURE SUMMARY...
The mild spring came to an end with summer, as most locations across the North Country saw average monthly temperatures slightly below normal. Although early June started out close or slightly warmer than normal, a cooler airmass settled over the region through the middle part of the month. Average daily temperatures were some 5 to 10 degrees below normal during this period. Nights were cool, with many locations reporting lows in the lower to mid 40s. Warmer conditions developed for the second half of the month, however, with most days near or slightly warmer than seasonal normal.
TEMPERATURE STATISTICS ACROSS THE NORTH COUNTRY FOR THE MONTH OF
JUNE...
| |
Burlington |
Montpelier |
Massena |
Saint Johnsbury |
| Avg. Temp |
65.2 |
61.8 |
64.1 |
63.2 |
| Departure |
-0.3 |
-0.8 |
-0.7 |
-1.4 |
| Highest |
85 on 20th |
84 on 19th |
85 on 19th |
84 on 18th and 19th |
| Lowest |
44 on 9th |
40 on 9th and 16th |
44 on 7th and 15th |
41 on 16th |
Below are daily temperature graphs for the month of June for Burlington, Montpelier, Massena, and Saint Johnsbury.
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PRECIPITATION SUMMARY...
June was a fairly wet month across Vermont and northern New York, as much of the area saw well-above normal rainfall. Monthly totals were mainly 4 to 7 inches, with a few locations receiving over 8 inches. For the most part, rain was spread throughout the month, with some heavier amounts seen at times. Many locations saw 24-hour rainfall totals of 1.5 inches or more at varying times of the month. Some examples include 1.45 inches in Sutton on the 5th, 1.82 in Gouverneur on the 24th, and 1.68 inches in Chelsea on the 27th. Montpelier broke two daily precipitation records, with .84 inches on the 24th, and 1.57 inches on the 28th. Massena also broke a rainfall record, on the 28th when 1.32 inches of rain was reported.
PRECIPITATION STATISTICS ACROSS THE NORTH COUNTRY FOR THE MONTH OF JUNE...
| |
Burlington |
Montpelier |
Massena |
Saint Johnsbury |
| Monthly Total " |
5.87 |
6.14 |
6.23 |
4.55 |
| Departure |
+2.44 |
+2.66 |
+2.93 |
+0.67 |
| Greatest 24hr |
1.35 on 5th-6th |
1.61 on 27th-28th |
1.52 on 16th-17th |
0.91 on 5th-6th |
| SNOW/SLEET |
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| Monthly Total " |
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| Greatest 24hr |
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BURLINGTON FORECAST AREA ACCUMULATED MONTHLY PRECIPITATION (IN INCHES) FOR THE MONTH OF JUNE
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BURLINGTON FORECAST AREA ACCUMULATED MONTHLY SNOWFALL (IN INCHES) FOR THE MONTH OF JUNE
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MONTHLY WEATHER PATTERNS AND GLOBAL CLIMATE DRIVERS...
The main 500 MB weather pattern during the month of June was an anomalously strong area of low pressure centered south and east of Hudson Bay, stretching westward into the Pacific Northwest. High pressure was located south of this feature, over the southeastern third of the Continental United States. The trough started the month across the western portions of the United States and Canada, but slid eastward through mid-June. This allowed temperatures to drop below normal across Vermont and Northern New York during this period, as well as bringing rounds of showers as the associated cold front moved through the region. High pressure briefly built northward into New England thereafter, allowing dry weather to make a short appearance. However, rain returned as low pressure again deepened just southeast of Hudson Bay. This resulted in steady and occasionally heavy rain during the last part of June.
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The Climate Prediction Center is forecasting both temperatures and precipitation have equal chances of being above or below normal for the month of July.
Neutral conditions continued across the equatorial Pacific Ocean through June, with sea-surface temperatures running around 0.5 degrees Celsius below normal. Models are consistent in indicating cooling sea-surface temperatures through the remainder of the summer, with the onset of La Nina conditions by September. Most of these models also show that La Nina will strengthen and persist through the winter.
CLIMATE PREDICTION CENTER JULY 2010 PRECIPITATION OUTLOOK...
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CLIMATE PREDICTION CENTER JULY 2010 TEMPERATURE OUTLOOK...
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Figure 1: Burlington Monthly Temperature Trend
Figure 2: Montpelier Monthly Temperature Trend
Figure 3: Massena Monthly Temperature Trend
Figure 4: Saint Johnsbury Temperature Trend
Figure 5: Monthly Precipitation Map
Figure 6: Monthly Snowfall Map
Figure 7: 500MB Geopotential Height Anomalies
Figure 8: Climate Prediction Center Precipitation Outlook
Figure 9: Climate Prediction Center Temperature Outlook
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