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Home > Climate > NWS Portland > Climate Prediction > Local Temperature Outlook

Three-Month Temperature Outlook (Issued: May 2013)

National Outlook Local Outlook Background Information Questions and Feedback
PORTLAND INTL AP, OR
MULTNOMAH County, Coop ID: 356751
Elevation: 19 ft.
Latitude: 45° 35' N Longitude: 122° 36' W 		NOAA Online Weather Data Help

Probability of Non-Exceedance Table
  JJA JAS ASO SON OND NDJ DJF JFM FMA MAM AMJ MJJ JJA
**R 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 1.0 0.9 0.9
99% 70.5 70.6 65.3 58.9 51.4 46.8 45.8 48.7 51.5 56.6 61.7 67.2 70.5
98% 70.2 70.3 65.1 58.5 50.9 46.3 45.3 48.2 51.1 56.2 61.3 66.8 70.2
97% 69.9 70.1 64.9 58.2 50.6 46.0 45.0 47.9 50.8 55.9 61.0 66.5 69.9
96% 69.8 69.9 64.8 58.0 50.4 45.8 44.8 47.7 50.7 55.7 60.8 66.3 69.8
95% 69.6 69.8 64.6 57.9 50.2 45.6 44.6 47.5 50.5 55.5 60.6 66.2 69.6
90% 69.2 69.3 64.3 57.3 49.6 45.0 44.0 46.8 50.0 55.0 60.1 65.6 69.2
80% 68.6 68.8 63.8 56.7 48.8 44.2 43.2 46.0 49.4 54.2 59.3 65.0 68.6
70% 68.2 68.4 63.5 56.2 48.3 43.7 42.7 45.4 48.9 53.7 58.8 64.5 68.2
60% 67.8 68.1 63.3 55.8 47.8 43.2 42.2 45.0 48.6 53.3 58.4 64.1 67.8
50% 67.5 67.8 63.0 55.4 47.4 42.8 41.8 44.5 48.2 52.9 58.0 63.7 67.5
40% 67.2 67.5 62.7 55.0 47.0 42.4 41.4 44.0 47.8 52.5 57.6 63.3 67.2
30% 66.8 67.2 62.5 54.6 46.5 41.9 40.9 43.6 47.5 52.1 57.2 62.9 66.8
20% 66.4 66.8 62.2 54.1 46.0 41.4 40.4 43.0 47.0 51.6 56.7 62.4 66.4
10% 65.8 66.3 61.7 53.5 45.2 40.6 39.6 42.2 46.4 50.8 55.9 61.8 65.8
5% 65.4 65.8 61.4 52.9 44.6 40.0 39.0 41.5 45.9 50.3 55.4 61.2 65.4
4% 65.2 65.7 61.2 52.8 44.4 39.8 38.8 41.3 45.7 50.1 55.2 61.1 65.2
3% 65.1 65.5 61.1 52.6 44.2 39.6 38.6 41.1 45.6 49.9 55.0 60.9 65.1
2% 64.8 65.3 60.9 52.3 43.9 39.3 38.3 40.8 45.3 49.6 54.7 60.6 64.8
1% 64.5 65.0 60.7 51.9 43.4 38.8 37.8 40.3 44.9 49.2 54.3 60.2 64.5
*Mean 67.5 67.8 63.0 55.4 47.4 42.8 41.8 44.5 48.2 52.9 58.0 63.7 67.5
StDev 1.3 1.2 1.0 1.5 1.7 1.7 1.7 1.8 1.4 1.6 1.6 1.5 1.3

Color
Legend		Deviation from
Climatology
(deg F)
 < -2.5
 -2.0 thru -2.5
 -1.5 thru -2.0
 -1.0 thru -1.5
Color
Legend		Deviation from
Climatology
(deg F)
 -0.5 thru -1.0
 -0.5 > deg F < 0.5
 0.5 thru 1.0
 1.0 thru 1.5
Color
Legend		Deviation from
Climatology
(deg F)
 1.5 thru 2.0
 2.0 thru 2.5
 > 2.5
Table Text Only

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Probability of Exceedance
Probability of Exceedance 		Three Category Calendar
Three Category Calendar
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