Roches Point 1971–2000 averages
TEMPERATURE (degrees Celsius)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
mean daily max	8.8	8.8	9.9	11.7	13.9	16.6	18.6	18.5	16.5	13.8	11.0	9.6	13.2
mean daily min	4.2	4.4	4.9	5.8	8.1	10.5	12.4	12.5	11.0	9.1	6.4	5.2	7.9
mean temperature	6.5	6.6	7.4	8.8	11.0	13.5	15.5	15.5	13.8	11.4	8.7	7.4	10.5
absolute max.	13.5	15.2	16.8	22.1	23.0	25.4	27.5	28.0	23.3	21.2	16.4	13.7	28.0
min. maximum	-3.3	0.1	2.6	6.0	8.7	11.4	13.5	12.7	10.9	8.3	4.4	-0.8	-3.3
max. minimum	10.7	10.2	10.6	12.5	15.6	15.9	18.1	19.2	16.6	15.5	13.2	12.0	19.2
absolute min.	-7.2	-4.6	-2.5	-0.8	0.8	5.1	0.2	6.9	4.7	1.7	-0.9	-2.0	-7.2
mean num. of days with air frost	1.9	1.4	0.6	0.1	0.0	0.0	0.0	0.0	0.0	0.0	0.1	0.9	4.9
mean num. of days with ground frost	8.1	5.5	4.3	4.0	1.0	0.0	0.0	0.0	0.1	0.8	3.6	5.8	33.3
mean 5cm soil	5.1	5.0	6.0	8.4	11.8	14.8	16.3	15.6	13.4	10.6	7.3	6.1	10.0
mean 10cm soil	5.4	5.3	6.1	8.2	11.2	14.1	15.7	15.2	13.3	10.8	7.7	6.5	10.0
mean 20cm soil	6.0	5.9	6.7	8.4	11.0	13.8	15.5	15.3	13.8	11.4	8.6	7.1	10.3
RELATIVE HUMIDITY (%)
mean at 0900UTC	87.1	87.0	85.5	80.3	80.6	81.7	82.0	84.6	85.6	87.2	86.1	88.0	84.6
mean at 1500UTC	82.7	80.5	77.2	73.3	75.9	77.1	76.8	78.1	77.3	80.5	80.0	84.1	78.6
SUNSHINE (hours)
mean daily duration	1.8	2.2	3.4	5.4	6.3	6.0	5.8	5.5	4.5	2.9	2.3	1.5	4.0
greatest daily duration	8.3	9.2	11.6	13.7	15.1	15.8	15.4	14.0	12.8	9.9	8.6	12.3	15.8
mean num. of days with no sun	7.6	6.5	4.7	2.1	1.9	1.6	1.1	1.5	2.4	4.6	6.8	8.4	49.2
RAINFALL (mm)
mean monthly total	79.5	72.0	63.9	39.7	50.6	43.3	42.4	61.8	57.2	79.8	60.6	77.3	727.9
greatest daily total	34.5	47.2	31.8	30.2	39.6	56.2	46.9	49.2	41.8	60.8	30.4	32.4	60.8
mean num. of days with >= 0.2mm	14	13	14	10	11	10	10	10	10	12	12	12	138
mean num. of days with >= 1.0mm	11	9	9	6	8	7	6	7	7	9	9	10	98
mean num. of days with >= 5.0mm	5	5	4	2	3	2	2	3	3	5	4	5	43
WIND (knots)
mean monthly speed	14.6	14.1	13.6	11.6	11.4	10.7	10.1	10.0	11.3	12.8	13.0	14.2	12.3
max. gust	86	82	76	68	58	53	57	60	71	76	69	89	89
max. mean 10-minute speed	68	56	52	50	41	41	40	42	52	55	49	68	50.7
mean num. of days with gales	5.3	4.2	3.7	1.5	0.9	0.4	0.3	0.6	1.3	2.6	3.3	4.9	29.0
WEATHER (mean no. of days with..)
snow or sleet	1.7	1.8	0.9	0.2	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.4	5.0
snow lying at 0900UTC	0.5	0.3	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.9
hail	0.8	0.7	1.8	1.1	0.5	0.1	0.0	0.1	0.0	0.2	0.2	0.3	5.9
thunder	0.2	0.2	0.0	0.1	0.2	0.4	0.6	0.5	0.2	0.3	0.1	0.1	2.9
fog	1.5	1.8	2.1	2.0	2.5	3.3	3.4	3.4	3.2	2.2	2.1	1.6	29.2