Mercer Island Weather In September 2015

Historical Data for September 2015 in Mercer Island, United States

Temperature	Max	Average	Min
Max Temperature	27.0°C (80.6°F)	20.4°C (68.72°F)	14.0°C (57.2°F)
Avg Temperature	23.0°C (73.4°F)	16.37°C (61.47°F)	13.0°C (55.4°F)
Min Temperature	14.0°C (57.2°F)	9.83°C (49.69°F)	7.0°C (44.6°F)
Dew Point	Max	Average	Min
Dew Point	15.0°C (59.0°F)	10.23°C (50.41°F)	7.0°C (44.6°F)
Precipitation	Max	Average	Min	Sum
Precipitation	10.5mm \| 0.41in	1.31mm \| 0.05in	0.0mm \| 0in	39.3mm \| 1.55in
Snowdepth	0.0mm \| 0in	0.0mm \| 0in	0.0mm \| 0in	0.0mm \| 0in
Wind	Max	Average	Min
Wind	12.0kmh \| 7.46mph	5.7kmh \| 3.54mph	3.0kmh \| 1.86mph
Gust Wind	19.0kmh \| 11.81mph	9.27kmh \| 5.76mph	5.0kmh \| 3.11mph
Sea Level Pressure	Max	Average	Min
Sea Level Pressure	10.5mb	1.31mb	0.0mb

September 2015 Graph

September 2015 - Daily Observations

Time	Temperature	Dew Point	Humidity	Wind Speed	Pressure	Precipitation
September	° C \| ° F	° C \| ° F	%	Kph \| Mph	Hg \| Mb	Total (mm/in)
2015-09-01	17 \| 62.6	11 \| 51.8	75	5 \| 3.11	30.06 \| 1018	0.6 \| 0.02
2015-09-02	15 \| 59.0	11 \| 51.8	83	7 \| 4.35	29.85 \| 1011	10.5 \| 0.41
2015-09-03	14 \| 57.2	8 \| 46.4	80	5 \| 3.11	29.97 \| 1015	8.6 \| 0.34
2015-09-04	17 \| 62.6	10 \| 50.0	73	5 \| 3.11	30.03 \| 1017	5.6 \| 0.22
2015-09-05	18 \| 64.4	11 \| 51.8	70	6 \| 3.73	30.0 \| 1016	0.4 \| 0.02
2015-09-06	13 \| 55.4	11 \| 51.8	85	4 \| 2.49	30.09 \| 1019	1.0 \| 0.04
2015-09-07	14 \| 57.2	10 \| 50.0	82	4 \| 2.49	30.18 \| 1022	0.7 \| 0.03
2015-09-08	18 \| 64.4	12 \| 53.6	78	6 \| 3.73	30.09 \| 1019	0.0 \| 0.0
2015-09-09	20 \| 68.0	13 \| 55.4	79	6 \| 3.73	30.06 \| 1018	0.0 \| 0.0
2015-09-10	20 \| 68.0	13 \| 55.4	79	7 \| 4.35	30.06 \| 1018	0.0 \| 0.0
2015-09-11	22 \| 71.6	14 \| 57.2	73	6 \| 3.73	30.03 \| 1017	0.0 \| 0.0
2015-09-12	23 \| 73.4	15 \| 59.0	75	4 \| 2.49	29.97 \| 1015	0.0 \| 0.0
2015-09-13	16 \| 60.8	11 \| 51.8	83	5 \| 3.11	29.91 \| 1013	1.9 \| 0.07
2015-09-14	14 \| 57.2	8 \| 46.4	77	5 \| 3.11	29.8 \| 1009	1.2 \| 0.05
2015-09-15	14 \| 57.2	7 \| 44.6	77	7 \| 4.35	29.8 \| 1009	1.4 \| 0.06
2015-09-16	17 \| 62.6	10 \| 50.0	75	7 \| 4.35	29.94 \| 1014	1.0 \| 0.04
2015-09-17	16 \| 60.8	11 \| 51.8	77	6 \| 3.73	29.97 \| 1015	0.5 \| 0.02
2015-09-18	16 \| 60.8	11 \| 51.8	77	5 \| 3.11	29.97 \| 1015	0.2 \| 0.01
2015-09-19	16 \| 60.8	11 \| 51.8	78	6 \| 3.73	30.0 \| 1016	0.6 \| 0.02
2015-09-20	17 \| 62.6	14 \| 57.2	89	12 \| 7.46	29.91 \| 1013	2.0 \| 0.08
2015-09-21	16 \| 60.8	9 \| 48.2	79	4 \| 2.49	30.0 \| 1016	0.2 \| 0.01
2015-09-22	15 \| 59.0	8 \| 46.4	71	4 \| 2.49	29.97 \| 1015	0.0 \| 0.0
2015-09-23	15 \| 59.0	7 \| 44.6	70	5 \| 3.11	30.03 \| 1017	0.0 \| 0.0
2015-09-24	18 \| 64.4	10 \| 50.0	72	5 \| 3.11	30.0 \| 1016	0.0 \| 0.0
2015-09-25	13 \| 55.4	10 \| 50.0	87	5 \| 3.11	30.0 \| 1016	2.0 \| 0.08
2015-09-26	14 \| 57.2	8 \| 46.4	79	5 \| 3.11	30.12 \| 1020	0.9 \| 0.04
2015-09-27	13 \| 55.4	7 \| 44.6	76	8 \| 4.97	30.15 \| 1021	0.0 \| 0.0
2015-09-28	16 \| 60.8	7 \| 44.6	69	9 \| 5.59	30.03 \| 1017	0.0 \| 0.0
2015-09-29	18 \| 64.4	9 \| 48.2	66	5 \| 3.11	29.94 \| 1014	0.0 \| 0.0
2015-09-30	16 \| 60.8	10 \| 50.0	80	3 \| 1.86	29.97 \| 1015	0.0 \| 0.0

Prev Month Next Month

Time	Temperature	Dew Point	Humidity	Wind Speed	Pressure	Precipitation
September	° C \| ° F	° C \| ° F	%	Kph \| Mph	Hg \| Mb	Total (mm/in)
2015-09-01	17 \| 62.6	11 \| 51.8	75	5 \| 3.11	30.06 \| 1018	0.6 \| 0.02
2015-09-02	15 \| 59.0	11 \| 51.8	83	7 \| 4.35	29.85 \| 1011	10.5 \| 0.41
2015-09-03	14 \| 57.2	8 \| 46.4	80	5 \| 3.11	29.97 \| 1015	8.6 \| 0.34
2015-09-04	17 \| 62.6	10 \| 50.0	73	5 \| 3.11	30.03 \| 1017	5.6 \| 0.22
2015-09-05	18 \| 64.4	11 \| 51.8	70	6 \| 3.73	30.0 \| 1016	0.4 \| 0.02
2015-09-06	13 \| 55.4	11 \| 51.8	85	4 \| 2.49	30.09 \| 1019	1.0 \| 0.04
2015-09-07	14 \| 57.2	10 \| 50.0	82	4 \| 2.49	30.18 \| 1022	0.7 \| 0.03
2015-09-08	18 \| 64.4	12 \| 53.6	78	6 \| 3.73	30.09 \| 1019	0.0 \| 0.0
2015-09-09	20 \| 68.0	13 \| 55.4	79	6 \| 3.73	30.06 \| 1018	0.0 \| 0.0
2015-09-10	20 \| 68.0	13 \| 55.4	79	7 \| 4.35	30.06 \| 1018	0.0 \| 0.0
2015-09-11	22 \| 71.6	14 \| 57.2	73	6 \| 3.73	30.03 \| 1017	0.0 \| 0.0
2015-09-12	23 \| 73.4	15 \| 59.0	75	4 \| 2.49	29.97 \| 1015	0.0 \| 0.0
2015-09-13	16 \| 60.8	11 \| 51.8	83	5 \| 3.11	29.91 \| 1013	1.9 \| 0.07
2015-09-14	14 \| 57.2	8 \| 46.4	77	5 \| 3.11	29.8 \| 1009	1.2 \| 0.05
2015-09-15	14 \| 57.2	7 \| 44.6	77	7 \| 4.35	29.8 \| 1009	1.4 \| 0.06
2015-09-16	17 \| 62.6	10 \| 50.0	75	7 \| 4.35	29.94 \| 1014	1.0 \| 0.04
2015-09-17	16 \| 60.8	11 \| 51.8	77	6 \| 3.73	29.97 \| 1015	0.5 \| 0.02
2015-09-18	16 \| 60.8	11 \| 51.8	77	5 \| 3.11	29.97 \| 1015	0.2 \| 0.01
2015-09-19	16 \| 60.8	11 \| 51.8	78	6 \| 3.73	30.0 \| 1016	0.6 \| 0.02
2015-09-20	17 \| 62.6	14 \| 57.2	89	12 \| 7.46	29.91 \| 1013	2.0 \| 0.08
2015-09-21	16 \| 60.8	9 \| 48.2	79	4 \| 2.49	30.0 \| 1016	0.2 \| 0.01
2015-09-22	15 \| 59.0	8 \| 46.4	71	4 \| 2.49	29.97 \| 1015	0.0 \| 0.0
2015-09-23	15 \| 59.0	7 \| 44.6	70	5 \| 3.11	30.03 \| 1017	0.0 \| 0.0
2015-09-24	18 \| 64.4	10 \| 50.0	72	5 \| 3.11	30.0 \| 1016	0.0 \| 0.0
2015-09-25	13 \| 55.4	10 \| 50.0	87	5 \| 3.11	30.0 \| 1016	2.0 \| 0.08
2015-09-26	14 \| 57.2	8 \| 46.4	79	5 \| 3.11	30.12 \| 1020	0.9 \| 0.04
2015-09-27	13 \| 55.4	7 \| 44.6	76	8 \| 4.97	30.15 \| 1021	0.0 \| 0.0
2015-09-28	16 \| 60.8	7 \| 44.6	69	9 \| 5.59	30.03 \| 1017	0.0 \| 0.0
2015-09-29	18 \| 64.4	9 \| 48.2	66	5 \| 3.11	29.94 \| 1014	0.0 \| 0.0
2015-09-30	16 \| 60.8	10 \| 50.0	80	3 \| 1.86	29.97 \| 1015	0.0 \| 0.0

Mercer Island Weather In September 2015

September 2015 Graph

September 2015 - Daily Observations

Mercer Island Historical Data