Mercer Island Weather In September 2017

Historical Data for September 2017 in Mercer Island, United States

Temperature	Max	Average	Min
Max Temperature	36.0°C (96.8°F)	24.27°C (75.69°F)	14.0°C (57.2°F)
Avg Temperature	30.0°C (86.0°F)	19.83°C (67.69°F)	12.0°C (53.6°F)
Min Temperature	20.0°C (68.0°F)	12.83°C (55.09°F)	7.0°C (44.6°F)
Dew Point	Max	Average	Min
Dew Point	16.0°C (60.8°F)	11.17°C (52.11°F)	6.0°C (42.8°F)
Precipitation	Max	Average	Min	Sum
Precipitation	16.5mm \| 0.65in	1.51mm \| 0.06in	0.0mm \| 0in	45.4mm \| 1.79in
Snowdepth	0.0mm \| 0in	0.0mm \| 0in	0.0mm \| 0in	0.0mm \| 0in
Wind	Max	Average	Min
Wind	8.0kmh \| 4.97mph	4.73kmh \| 2.94mph	3.0kmh \| 1.86mph
Gust Wind	12.0kmh \| 7.46mph	7.4kmh \| 4.6mph	5.0kmh \| 3.11mph
Sea Level Pressure	Max	Average	Min
Sea Level Pressure	16.5mb	1.51mb	0.0mb

September 2017 Graph

September 2017 - Daily Observations

Time	Temperature	Dew Point	Humidity	Wind Speed	Pressure	Precipitation
September	° C \| ° F	° C \| ° F	%	Kph \| Mph	Hg \| Mb	Total (mm/in)
2017-09-01	24 \| 75.2	11 \| 51.8	55	5 \| 3.11	30.09 \| 1019	0.0 \| 0.0
2017-09-02	27 \| 80.6	14 \| 57.2	55	5 \| 3.11	30.0 \| 1016	0.0 \| 0.0
2017-09-03	27 \| 80.6	15 \| 59.0	61	5 \| 3.11	30.0 \| 1016	0.0 \| 0.0
2017-09-04	26 \| 78.8	14 \| 57.2	57	6 \| 3.73	30.03 \| 1017	0.0 \| 0.0
2017-09-05	30 \| 86.0	12 \| 53.6	42	4 \| 2.49	29.97 \| 1015	0.0 \| 0.0
2017-09-06	27 \| 80.6	16 \| 60.8	63	4 \| 2.49	29.94 \| 1014	0.0 \| 0.0
2017-09-07	24 \| 75.2	16 \| 60.8	75	3 \| 1.86	29.91 \| 1013	0.0 \| 0.0
2017-09-08	20 \| 68.0	16 \| 60.8	84	3 \| 1.86	29.94 \| 1014	0.6 \| 0.02
2017-09-09	16 \| 60.8	12 \| 53.6	81	6 \| 3.73	30.06 \| 1018	0.2 \| 0.01
2017-09-10	21 \| 69.8	11 \| 51.8	70	4 \| 2.49	30.24 \| 1024	1.2 \| 0.05
2017-09-11	24 \| 75.2	12 \| 53.6	59	4 \| 2.49	30.12 \| 1020	0.0 \| 0.0
2017-09-12	22 \| 71.6	14 \| 57.2	70	4 \| 2.49	29.97 \| 1015	0.0 \| 0.0
2017-09-13	18 \| 64.4	9 \| 48.2	67	4 \| 2.49	29.94 \| 1014	0.0 \| 0.0
2017-09-14	19 \| 66.2	8 \| 46.4	61	5 \| 3.11	29.97 \| 1015	0.0 \| 0.0
2017-09-15	20 \| 68.0	7 \| 44.6	53	4 \| 2.49	30.06 \| 1018	0.0 \| 0.0
2017-09-16	20 \| 68.0	6 \| 42.8	49	3 \| 1.86	30.0 \| 1016	0.0 \| 0.0
2017-09-17	15 \| 59.0	9 \| 48.2	74	7 \| 4.35	29.83 \| 1010	1.9 \| 0.07
2017-09-18	12 \| 53.6	9 \| 48.2	86	8 \| 4.97	29.77 \| 1008	5.5 \| 0.22
2017-09-19	12 \| 53.6	9 \| 48.2	91	6 \| 3.73	29.74 \| 1007	16.5 \| 0.65
2017-09-20	13 \| 55.4	7 \| 44.6	80	5 \| 3.11	29.71 \| 1006	3.6 \| 0.14
2017-09-21	13 \| 55.4	8 \| 46.4	80	4 \| 2.49	29.94 \| 1014	1.2 \| 0.05
2017-09-22	16 \| 60.8	8 \| 46.4	74	4 \| 2.49	30.03 \| 1017	0.0 \| 0.0
2017-09-23	17 \| 62.6	9 \| 48.2	75	4 \| 2.49	30.09 \| 1019	0.1 \| 0.0
2017-09-24	18 \| 64.4	10 \| 50.0	74	3 \| 1.86	30.12 \| 1020	0.0 \| 0.0
2017-09-25	17 \| 62.6	12 \| 53.6	82	3 \| 1.86	30.09 \| 1019	0.2 \| 0.01
2017-09-26	18 \| 64.4	13 \| 55.4	80	5 \| 3.11	30.15 \| 1021	0.0 \| 0.0
2017-09-27	24 \| 75.2	14 \| 57.2	67	5 \| 3.11	30.09 \| 1019	0.0 \| 0.0
2017-09-28	26 \| 78.8	12 \| 53.6	53	5 \| 3.11	29.97 \| 1015	0.0 \| 0.0
2017-09-29	15 \| 59.0	12 \| 53.6	85	8 \| 4.97	29.94 \| 1014	2.4 \| 0.09
2017-09-30	14 \| 57.2	10 \| 50.0	86	6 \| 3.73	30.06 \| 1018	12.0 \| 0.47

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)
2017-09-01	24 \| 75.2	11 \| 51.8	55	5 \| 3.11	30.09 \| 1019	0.0 \| 0.0
2017-09-02	27 \| 80.6	14 \| 57.2	55	5 \| 3.11	30.0 \| 1016	0.0 \| 0.0
2017-09-03	27 \| 80.6	15 \| 59.0	61	5 \| 3.11	30.0 \| 1016	0.0 \| 0.0
2017-09-04	26 \| 78.8	14 \| 57.2	57	6 \| 3.73	30.03 \| 1017	0.0 \| 0.0
2017-09-05	30 \| 86.0	12 \| 53.6	42	4 \| 2.49	29.97 \| 1015	0.0 \| 0.0
2017-09-06	27 \| 80.6	16 \| 60.8	63	4 \| 2.49	29.94 \| 1014	0.0 \| 0.0
2017-09-07	24 \| 75.2	16 \| 60.8	75	3 \| 1.86	29.91 \| 1013	0.0 \| 0.0
2017-09-08	20 \| 68.0	16 \| 60.8	84	3 \| 1.86	29.94 \| 1014	0.6 \| 0.02
2017-09-09	16 \| 60.8	12 \| 53.6	81	6 \| 3.73	30.06 \| 1018	0.2 \| 0.01
2017-09-10	21 \| 69.8	11 \| 51.8	70	4 \| 2.49	30.24 \| 1024	1.2 \| 0.05
2017-09-11	24 \| 75.2	12 \| 53.6	59	4 \| 2.49	30.12 \| 1020	0.0 \| 0.0
2017-09-12	22 \| 71.6	14 \| 57.2	70	4 \| 2.49	29.97 \| 1015	0.0 \| 0.0
2017-09-13	18 \| 64.4	9 \| 48.2	67	4 \| 2.49	29.94 \| 1014	0.0 \| 0.0
2017-09-14	19 \| 66.2	8 \| 46.4	61	5 \| 3.11	29.97 \| 1015	0.0 \| 0.0
2017-09-15	20 \| 68.0	7 \| 44.6	53	4 \| 2.49	30.06 \| 1018	0.0 \| 0.0
2017-09-16	20 \| 68.0	6 \| 42.8	49	3 \| 1.86	30.0 \| 1016	0.0 \| 0.0
2017-09-17	15 \| 59.0	9 \| 48.2	74	7 \| 4.35	29.83 \| 1010	1.9 \| 0.07
2017-09-18	12 \| 53.6	9 \| 48.2	86	8 \| 4.97	29.77 \| 1008	5.5 \| 0.22
2017-09-19	12 \| 53.6	9 \| 48.2	91	6 \| 3.73	29.74 \| 1007	16.5 \| 0.65
2017-09-20	13 \| 55.4	7 \| 44.6	80	5 \| 3.11	29.71 \| 1006	3.6 \| 0.14
2017-09-21	13 \| 55.4	8 \| 46.4	80	4 \| 2.49	29.94 \| 1014	1.2 \| 0.05
2017-09-22	16 \| 60.8	8 \| 46.4	74	4 \| 2.49	30.03 \| 1017	0.0 \| 0.0
2017-09-23	17 \| 62.6	9 \| 48.2	75	4 \| 2.49	30.09 \| 1019	0.1 \| 0.0
2017-09-24	18 \| 64.4	10 \| 50.0	74	3 \| 1.86	30.12 \| 1020	0.0 \| 0.0
2017-09-25	17 \| 62.6	12 \| 53.6	82	3 \| 1.86	30.09 \| 1019	0.2 \| 0.01
2017-09-26	18 \| 64.4	13 \| 55.4	80	5 \| 3.11	30.15 \| 1021	0.0 \| 0.0
2017-09-27	24 \| 75.2	14 \| 57.2	67	5 \| 3.11	30.09 \| 1019	0.0 \| 0.0
2017-09-28	26 \| 78.8	12 \| 53.6	53	5 \| 3.11	29.97 \| 1015	0.0 \| 0.0
2017-09-29	15 \| 59.0	12 \| 53.6	85	8 \| 4.97	29.94 \| 1014	2.4 \| 0.09
2017-09-30	14 \| 57.2	10 \| 50.0	86	6 \| 3.73	30.06 \| 1018	12.0 \| 0.47

Mercer Island Weather In September 2017

September 2017 Graph

September 2017 - Daily Observations

Mercer Island Historical Data