Roches Point1961-1990 averages
TEMPERATURE (degrees Celsius)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
mean daily max.	8.5	8.3	9.6	11.4	13.7	16.4	18.2	18.1	16.2	13.7	10.7	9.3	12.8
mean daily min.	4.1	4.1	4.5	5.6	7.8	10.3	12.0	12.0	10.7	8.9	6.0	5.1	7.6
mean	6.3	6.2	7.1	8.5	10.7	13.4	15.1	15.1	13.5	11.3	8.3	7.2	10.2
absolute max.	13.5	14.0	14.9	20.1	21.5	25.3	27.5	26.5	23.3	19.1	16.4	14.4	27.5
absolute min.	-7.2	-5.1	-3.4	-0.3	0.8	3.4	7.2	6.8	4.7	1.9	-0.9	-3.7	-7.2
mean no. of days with air frost	2.5	2.0	0.9	0.1	0.0	0.0	0.0	0.0	0.0	0.0	0.2	1.3	7.0
mean no. of days with ground frost	10.2	7.3	6.6	5.1	1.2	0.1	0.0	0.0	0.1	0.9	5.2	8.0	44.6
RELATIVE HUMIDITY (%)
mean at 0900UTC	87	86	85	81	81	82	83	84	87	88	87	88	85
mean at 1500UTC	82	80	76	74	76	77	77	77	78	81	81	83	79
SUNSHINE (hours)
mean daily duration	1.79	2.31	3.50	5.27	6.18	5.92	5.57	5.21	4.27	2.87	2.34	1.66	3.91
greatest daily duration	8.3	9.2	11.6	13.7	15.1	15.8	15.4	14.4	12.8	9.9	8.7	7.1	15.8
mean no. of days with no sun	10	8	6	3	2	2	1	2	3	6	9	11	63
RAINFALL (mm)
mean monthly total	104.4	86.7	77.3	54.7	63.9	53.9	53.1	79.9	78.8	94.9	87.8	100.4	935.7
greatest daily total	47.0	40.2	38.4	37.5	35.5	44.5	46.9	84.4	50.9	54.8	46.1	58.1	84.4
mean no. of days with >= 0.2mm	19	16	16	13	15	13	11	14	15	17	17	17	184
mean no. of days with >= 1.0mm	15	13	11	10	11	9	8	11	10	12	12	13	135
mean no. of days with >= 5.0mm	7	6	5	4	4	3	3	5	5	6	6	7	63
WIND (knots)
mean monthly speed	14.6	14.0	13.4	11.8	11.5	10.3	9.9	10.3	11.2	12.7	13.0	14.1	12.2
max. gust	86	82	76	71	58	53	57	60	75	83	75	78	86
max. mean 10-minute speed	62	56	52	53	43	41	40	42	52	54	49	53	62
mean no. of days with gales	6	4.4	4.2	1.8	1.5	0.3	0.5	0.9	1.8	3.1	3.5	5.3	33.3
WEATHER (mean no. of days with...)
snow or sleet	2.6	3.0	1.3	0.3	0.1	0.0	0.0	0.0	0.0	0.0	0.2	1.1	8.7
snow lying at 0900UTC	0.5	0.6	0.1	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.1	1.3
hail	1.0	1.0	2.4	1.6	0.8	0.1	0.0	0.1	0.0	0.2	0.3	0.4	8.0
thunder	0.2	0.3	0.1	0.1	0.5	0.7	0.8	0.6	0.4	0.3	0.1	0.1	4.2
fog	2.9	2.4	3.6	3.7	4.2	5.1	4.9	5.1	4.9	4.3	2.8	2.7	46.5