Portland, Oregon1998 Climate Data
North America Region, US
Detailed temperature analysis for 1998 with 360 daily measurements across 12 months.
Avg: 54.8°F
12 Months
360 Records
Year Average
54.8°F
1998
Highest
86.3°F
Lowest
19.4°F
Range
66.9°F
Monthly Temperature Progression - 1998
32°F
42°F
Jan
46°F
Feb
48°F
Mar
52°F
Apr
56°F
May
62°F
Jun
70°F
Jul
70°F
Aug
66°F
Sep
54°F
Oct
49°F
Nov
40°F
Dec
Below Freezing
|32°F (0°C)|Above Freezing
Monthly Details - 1998
January 1998
Average:42.4°F
Range:26.3°F - 49.9°F
Days:30 days
Records:30
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February 1998
Average:45.7°F
Range:39.1°F - 49.9°F
Days:28 days
Records:28
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March 1998
Average:48.3°F
Range:39.8°F - 57.2°F
Days:31 days
Records:31
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April 1998
Average:51.9°F
Range:44.4°F - 70.1°F
Days:30 days
Records:30
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May 1998
Average:55.5°F
Range:49.1°F - 69.2°F
Days:31 days
Records:31
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June 1998
Average:62.2°F
Range:56.7°F - 70.5°F
Days:30 days
Records:30
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July 1998
Average:69.7°F
Range:60.3°F - 86.3°F
Days:31 days
Records:31
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August 1998
Average:69.5°F
Range:63.2°F - 78.4°F
Days:31 days
Records:31
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September 1998
Average:65.9°F
Range:56.2°F - 78.7°F
Days:30 days
Records:30
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October 1998
Average:54.4°F
Range:44.4°F - 63.8°F
Days:31 days
Records:31
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November 1998
Average:48.7°F
Range:42.1°F - 54.4°F
Days:30 days
Records:30
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December 1998
Average:40.4°F
Range:19.4°F - 52.3°F
Days:27 days
Records:27
View Daily Data
1998 Climate Summary
The year 1998 in Portland, Oregon, US was characterized by an average temperature of 54.8°F, with temperatures ranging from a low of 19.4°F to a high of 86.3°F.
Temperature Analysis
- Annual Average: 54.8°F
- Temperature Extremes: 66.9°F range
- Data Coverage: 12 months with available observations
- Total Measurements: 360 daily records
Seasonal Patterns
January42.4°F
February45.7°F
March48.3°F
April51.9°F
... and 8 more months