Weather Averages for Johnston Island Johnston Atoll Airport, United States Minor Outlying Islands

Weather Averages for
Johnston Island Johnston Atoll Airport, United States Minor Outlying Islands

Latitude: 16°44'N, Longitude: 169°31'W, Elevation: 4.9 m, Distance: 0.69 km

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 9 years	°C	26	25	25	25	25	26	26	27	27	27	27	26	25
Average high temperature over 9 years	°C	28	27	27	27	27	28	28	29	29	29	29	28	27
Average low temperature over 9 years	°C	23	22	22	22	23	23	24	25	25	25	25	24	23
Highest recorded temperature over 9 years	°C	32	30	29	29	30	30	31	31	31	32	31	32	29
Lowest recorded temperature over 9 years	°C	17	17	19	20	20	20	21	21	21	22	20	20	20
Average number of rainy days over 9 years	days	144	11	10	10	14	12	11	13	11	12	13	13	14
Average precipitation over 9 years	cm	70.1	14.2	5.3	5.8	6.6	2.8	2.3	3.3	3.3	4.3	5.8	4.8	9.1
Average dew point over 10 years	°C	21	20	20	20	21	21	22	22	22	23	22	22	21
Average number of days with thunderstorms over 9 years	days	5	1	-	1	1	-	-	-	-	-	1	-	1
Average morning relative humidity over 10 years	%	80.1	78.7	78.1	80	80.2	79.7	79.3	80	81.6	81.8	81.2	81	79.3
Average evening relative humidity over 10 years	%	72.8	71.2	70.9	72.3	72.9	71.8	71.4	72	73.8	74.2	74.1	75.2	73.3
Average wind speed over 12 years	km/h	17.7	25.7	29.0	29.0	27.4	25.7	27.4	25.7	22.5	25.7	27.4	29.0	25.7
Average number of clear days over 24 years	days	99	13	11	11	7	6	7	6	6	6	7	7	11
Most rain reported in a day over 9 years	cm	24.9	24.9	10.7	8.9	7.1	3.0	2.3	3.0	2.5	3.8	8.1	7.1	7.9
Most rain reported in a month over 9 years	cm	89.2	32.8	13.0	14.5	24.1	5.1	4.3	5.1	7.4	7.4	12.7	17.0	17.3
Least rain reported in a month over 9 years	cm	32.0	1.0	0.8	1.8	2.0	0.5	0.8	1.0	0.8	0.8	1.5	1.3	0.5
Heating degree days over 37 years	days	1	1	-	-	-	-	-	-	-	-	-	-	-
Cooling degree days over 37 years	days	5442	391	344	399	408	456	472	515	536	520	520	460	421
Average possibility of sunshine over 22 years	%	71	70	74	74	70	74	78	79	76	73	65	59	62
Average number of partly cloudy days over 24 years	days	159	14	13	14	12	13	15	16	14	13	12	12	13
Average number of days above 24.5°C over 12 years	days	9	1	1	1	4	8	17	24	23	17	6	1	104
Average possibility of clouds over 10 years	%	43.2	29.7	31.2	33.1	51	48.6	47.1	44.7	48.3	47.8	48.1	51.6	37
Most snow reported in a day over 9 years	cm	-	-	-	-	-	-	-	-	-	-	-	-	-
Average wet bulb point over 10 years	°C	22	21	21	21	22	22	23	23	24	24	23	23	22
Average number of days below 17°C over 9 years	days	8	3	1	1	1	1	-	-	-	-	-	1	-

Check weather averages for nearby locations (some locations might offer more data):

Latitude: 19°1'N, Longitude: 169°55'W, Elevation: 21.9 m, Distance: 99.27 km

Latitude: 21°1'N, Longitude: 175°12'W, Elevation: 2.1 m, Distance: 294.57 km

Latitude: 16°1'N, Longitude: 179°58'W, Elevation: 63.1 m, Distance: 430.81 km

Latitude: 22°2'N, Longitude: 159°47'W, Elevation: 4.3 m, Distance: 455.52 km

Back to current weather in Johnston Island Johnston Atoll Airport, United States Minor Outlying Islands »

Weather Averages Johnston Island Johnston Atoll Airport, United States Minor Outlying Islands