Portland, Maine2009 Climate Data
North America Region, US
Detailed temperature analysis for 2009 with 364 daily measurements across 12 months.
Avg: 46.4°F
12 Months
364 Records
Year Average
46.4°F
2009
Highest
80.5°F
Lowest
0.5°F
Range
80.0°F
Monthly Temperature Progression - 2009
32°F
18°F
Jan
27°F
Feb
33°F
Mar
47°F
Apr
55°F
May
60°F
Jun
66°F
Jul
70°F
Aug
60°F
Sep
47°F
Oct
44°F
Nov
29°F
Dec
Below Freezing
|32°F (0°C)|Above Freezing
Monthly Details - 2009
January 2009
Average:18.4°F
Range:0.5°F - 29.1°F
Days:31 days
Records:31
View Daily Data
February 2009
Average:26.6°F
Range:8.5°F - 39.2°F
Days:28 days
Records:28
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March 2009
Average:33.0°F
Range:14.5°F - 45.2°F
Days:31 days
Records:31
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April 2009
Average:46.7°F
Range:35.7°F - 62.7°F
Days:29 days
Records:29
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May 2009
Average:55.0°F
Range:46.1°F - 73.2°F
Days:31 days
Records:31
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June 2009
Average:60.2°F
Range:53.4°F - 66.5°F
Days:30 days
Records:30
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July 2009
Average:65.5°F
Range:56.2°F - 74.3°F
Days:31 days
Records:31
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August 2009
Average:69.9°F
Range:57.9°F - 80.5°F
Days:31 days
Records:31
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September 2009
Average:59.8°F
Range:47.6°F - 69.9°F
Days:30 days
Records:30
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October 2009
Average:47.0°F
Range:36.2°F - 59.0°F
Days:31 days
Records:31
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November 2009
Average:43.7°F
Range:36.3°F - 57.3°F
Days:30 days
Records:30
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December 2009
Average:29.4°F
Range:11.8°F - 53.6°F
Days:31 days
Records:31
View Daily Data
2009 Climate Summary
The year 2009 in Portland, Maine, US was characterized by an average temperature of 46.4°F, with temperatures ranging from a low of 0.5°F to a high of 80.5°F.
Temperature Analysis
- Annual Average: 46.4°F
- Temperature Extremes: 80.0°F range
- Data Coverage: 12 months with available observations
- Total Measurements: 364 daily records
Seasonal Patterns
January18.4°F
February26.6°F
March33.0°F
April46.7°F
... and 8 more months