Mercer Island Weather In September 2019

Historical Data for September 2019 in Mercer Island, United States

Temperature	Max	Average	Min
Max Temperature	28.0°C (82.4°F)	20.47°C (68.85°F)	13.0°C (55.4°F)
Avg Temperature	23.0°C (73.4°F)	16.93°C (62.47°F)	10.0°C (50.0°F)
Min Temperature	15.0°C (59.0°F)	11.27°C (52.29°F)	4.0°C (39.2°F)
Dew Point	Max	Average	Min
Dew Point	15.0°C (59.0°F)	11.57°C (52.83°F)	1.0°C (33.8°F)
Precipitation	Max	Average	Min	Sum
Precipitation	17.1mm \| 0.67in	3.39mm \| 0.13in	0.0mm \| 0in	101.8mm \| 4.01in
Snowdepth	0.0mm \| 0in	0.0mm \| 0in	0.0mm \| 0in	0.0mm \| 0in
Wind	Max	Average	Min
Wind	11.0kmh \| 6.84mph	6.6kmh \| 4.1mph	4.0kmh \| 2.49mph
Gust Wind	16.0kmh \| 9.94mph	9.57kmh \| 5.95mph	5.0kmh \| 3.11mph
Sea Level Pressure	Max	Average	Min
Sea Level Pressure	17.1mb	3.39mb	0.0mb

September 2019 Graph

September 2019 - Daily Observations

Time	Temperature	Dew Point	Humidity	Wind Speed	Pressure	Precipitation
September	° C \| ° F	° C \| ° F	%	Kph \| Mph	Hg \| Mb	Total (mm/in)
2019-09-01	22 \| 71.6	14 \| 57.2	75	6 \| 3.73	29.97 \| 1015	0.2 \| 0.01
2019-09-02	22 \| 71.6	14 \| 57.2	75	7 \| 4.35	30.03 \| 1017	0.0 \| 0.0
2019-09-03	23 \| 73.4	14 \| 57.2	72	5 \| 3.11	30.0 \| 1016	0.0 \| 0.0
2019-09-04	21 \| 69.8	14 \| 57.2	80	7 \| 4.35	30.03 \| 1017	0.0 \| 0.0
2019-09-05	22 \| 71.6	13 \| 55.4	72	8 \| 4.97	29.97 \| 1015	0.0 \| 0.0
2019-09-06	22 \| 71.6	15 \| 59.0	77	6 \| 3.73	30.03 \| 1017	3.6 \| 0.14
2019-09-07	20 \| 68.0	15 \| 59.0	84	4 \| 2.49	29.97 \| 1015	5.1 \| 0.2
2019-09-08	17 \| 62.6	14 \| 57.2	89	11 \| 6.84	29.88 \| 1012	5.9 \| 0.23
2019-09-09	15 \| 59.0	13 \| 55.4	94	10 \| 6.21	29.85 \| 1011	7.1 \| 0.28
2019-09-10	19 \| 66.2	12 \| 53.6	80	4 \| 2.49	29.91 \| 1013	2.3 \| 0.09
2019-09-11	19 \| 66.2	11 \| 51.8	75	5 \| 3.11	30.12 \| 1020	0.1 \| 0.0
2019-09-12	21 \| 69.8	12 \| 53.6	68	6 \| 3.73	30.09 \| 1019	0.7 \| 0.03
2019-09-13	18 \| 64.4	14 \| 57.2	85	9 \| 5.59	30.09 \| 1019	1.8 \| 0.07
2019-09-14	16 \| 60.8	13 \| 55.4	87	7 \| 4.35	29.94 \| 1014	0.2 \| 0.01
2019-09-15	15 \| 59.0	13 \| 55.4	90	11 \| 6.84	29.74 \| 1007	10.9 \| 0.43
2019-09-16	15 \| 59.0	11 \| 51.8	87	8 \| 4.97	29.8 \| 1009	4.4 \| 0.17
2019-09-17	13 \| 55.4	11 \| 51.8	93	8 \| 4.97	29.77 \| 1008	17.1 \| 0.67
2019-09-18	16 \| 60.8	11 \| 51.8	83	5 \| 3.11	29.88 \| 1012	4.5 \| 0.18
2019-09-19	17 \| 62.6	11 \| 51.8	79	6 \| 3.73	30.03 \| 1017	0.5 \| 0.02
2019-09-20	17 \| 62.6	13 \| 55.4	86	5 \| 3.11	30.06 \| 1018	1.1 \| 0.04
2019-09-21	17 \| 62.6	12 \| 53.6	81	5 \| 3.11	30.06 \| 1018	0.0 \| 0.0
2019-09-22	16 \| 60.8	13 \| 55.4	89	5 \| 3.11	29.88 \| 1012	2.1 \| 0.08
2019-09-23	13 \| 55.4	11 \| 51.8	91	9 \| 5.59	30.12 \| 1020	2.1 \| 0.08
2019-09-24	16 \| 60.8	12 \| 53.6	85	7 \| 4.35	30.18 \| 1022	1.0 \| 0.04
2019-09-25	17 \| 62.6	10 \| 50.0	72	5 \| 3.11	30.18 \| 1022	0.4 \| 0.02
2019-09-26	16 \| 60.8	12 \| 53.6	82	7 \| 4.35	29.88 \| 1012	5.8 \| 0.23
2019-09-27	11 \| 51.8	9 \| 48.2	87	6 \| 3.73	29.88 \| 1012	11.4 \| 0.45
2019-09-28	10 \| 50.0	6 \| 42.8	81	5 \| 3.11	29.85 \| 1011	9.5 \| 0.37
2019-09-29	11 \| 51.8	3 \| 37.4	71	7 \| 4.35	29.97 \| 1015	4.0 \| 0.16
2019-09-30	11 \| 51.8	1 \| 33.8	61	4 \| 2.49	30.12 \| 1020	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)
2019-09-01	22 \| 71.6	14 \| 57.2	75	6 \| 3.73	29.97 \| 1015	0.2 \| 0.01
2019-09-02	22 \| 71.6	14 \| 57.2	75	7 \| 4.35	30.03 \| 1017	0.0 \| 0.0
2019-09-03	23 \| 73.4	14 \| 57.2	72	5 \| 3.11	30.0 \| 1016	0.0 \| 0.0
2019-09-04	21 \| 69.8	14 \| 57.2	80	7 \| 4.35	30.03 \| 1017	0.0 \| 0.0
2019-09-05	22 \| 71.6	13 \| 55.4	72	8 \| 4.97	29.97 \| 1015	0.0 \| 0.0
2019-09-06	22 \| 71.6	15 \| 59.0	77	6 \| 3.73	30.03 \| 1017	3.6 \| 0.14
2019-09-07	20 \| 68.0	15 \| 59.0	84	4 \| 2.49	29.97 \| 1015	5.1 \| 0.2
2019-09-08	17 \| 62.6	14 \| 57.2	89	11 \| 6.84	29.88 \| 1012	5.9 \| 0.23
2019-09-09	15 \| 59.0	13 \| 55.4	94	10 \| 6.21	29.85 \| 1011	7.1 \| 0.28
2019-09-10	19 \| 66.2	12 \| 53.6	80	4 \| 2.49	29.91 \| 1013	2.3 \| 0.09
2019-09-11	19 \| 66.2	11 \| 51.8	75	5 \| 3.11	30.12 \| 1020	0.1 \| 0.0
2019-09-12	21 \| 69.8	12 \| 53.6	68	6 \| 3.73	30.09 \| 1019	0.7 \| 0.03
2019-09-13	18 \| 64.4	14 \| 57.2	85	9 \| 5.59	30.09 \| 1019	1.8 \| 0.07
2019-09-14	16 \| 60.8	13 \| 55.4	87	7 \| 4.35	29.94 \| 1014	0.2 \| 0.01
2019-09-15	15 \| 59.0	13 \| 55.4	90	11 \| 6.84	29.74 \| 1007	10.9 \| 0.43
2019-09-16	15 \| 59.0	11 \| 51.8	87	8 \| 4.97	29.8 \| 1009	4.4 \| 0.17
2019-09-17	13 \| 55.4	11 \| 51.8	93	8 \| 4.97	29.77 \| 1008	17.1 \| 0.67
2019-09-18	16 \| 60.8	11 \| 51.8	83	5 \| 3.11	29.88 \| 1012	4.5 \| 0.18
2019-09-19	17 \| 62.6	11 \| 51.8	79	6 \| 3.73	30.03 \| 1017	0.5 \| 0.02
2019-09-20	17 \| 62.6	13 \| 55.4	86	5 \| 3.11	30.06 \| 1018	1.1 \| 0.04
2019-09-21	17 \| 62.6	12 \| 53.6	81	5 \| 3.11	30.06 \| 1018	0.0 \| 0.0
2019-09-22	16 \| 60.8	13 \| 55.4	89	5 \| 3.11	29.88 \| 1012	2.1 \| 0.08
2019-09-23	13 \| 55.4	11 \| 51.8	91	9 \| 5.59	30.12 \| 1020	2.1 \| 0.08
2019-09-24	16 \| 60.8	12 \| 53.6	85	7 \| 4.35	30.18 \| 1022	1.0 \| 0.04
2019-09-25	17 \| 62.6	10 \| 50.0	72	5 \| 3.11	30.18 \| 1022	0.4 \| 0.02
2019-09-26	16 \| 60.8	12 \| 53.6	82	7 \| 4.35	29.88 \| 1012	5.8 \| 0.23
2019-09-27	11 \| 51.8	9 \| 48.2	87	6 \| 3.73	29.88 \| 1012	11.4 \| 0.45
2019-09-28	10 \| 50.0	6 \| 42.8	81	5 \| 3.11	29.85 \| 1011	9.5 \| 0.37
2019-09-29	11 \| 51.8	3 \| 37.4	71	7 \| 4.35	29.97 \| 1015	4.0 \| 0.16
2019-09-30	11 \| 51.8	1 \| 33.8	61	4 \| 2.49	30.12 \| 1020	0.0 \| 0.0

Mercer Island Weather In September 2019

September 2019 Graph

September 2019 - Daily Observations

Mercer Island Historical Data