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Sandusky, Ohio climate

Cfa Humid subtropical

Sandusky has a strongly seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 82°F, while the coldest is January averaging around 22°F at night. Around 34 inches of precipitation falls each year, peaking in April (3.8 inches) and easing off in February (1.8 inches).

☀️ Summers

Warm

Highs near 82°F in July.

About 8 days a year above 90 °F

❄️ Winters

Cold

Lows near 22°F in January.

About 102 freezing nights a year

🌧️ Rain

Moderate rainfall

About 34 in of rain a year.

Wettest in April

⛅ Sky & trend

Often grey

Overcast skies dominate much of the year.

+1.8 °F vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Sandusky climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	34	37	45	57	69	78	82	81	75	63	50	39
Avg temp (°F)	28	30	38	49	61	71	75	73	67	55	44	34
Avg low (°F)	22	23	31	41	53	63	67	66	59	48	37	28
Precipitation (in)	1.9	1.8	2.6	3.8	3.3	3.7	3.6	3.0	3.1	2.7	2.6	2.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	34	37	45	57	69	78
Avg temp (°F)	28	30	38	49	61	71
Avg low (°F)	22	23	31	41	53	63
Precipitation (in)	1.9	1.8	2.6	3.8	3.3	3.7

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	82	81	75	63	50	39
Avg temp (°F)	75	73	67	55	44	34
Avg low (°F)	67	66	59	48	37	28
Precipitation (in)	3.6	3.0	3.1	2.7	2.6	2.1

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	10	10	12	13	13	12	9	9	9	11	11	12
Days with high ≥ 90°F (days)	—	—	—	—	0.2	2	3	2	0.8	—	—	—
Days with low ≤ 32°F (days)	25	23	18	3	—	—	—	—	—	0.4	10	22
Days with snowfall ≥ 1 in (days)	1	0.7	0.6	0.1	—	—	—	—	—	—	0.0	0.5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	10	10	12	13	13	12
Days with high ≥ 90°F (days)	—	—	—	—	0.2	2
Days with low ≤ 32°F (days)	25	23	18	3	—	—
Days with snowfall ≥ 1 in (days)	1	0.7	0.6	0.1	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	9	9	9	11	11	12
Days with high ≥ 90°F (days)	3	2	0.8	—	—	—
Days with low ≤ 32°F (days)	—	—	—	0.4	10	22
Days with snowfall ≥ 1 in (days)	—	—	—	—	0.0	0.5

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	79	79	80	78	76	71	65	65	60	66	73	78
Clear days (≤ 30% cloud)	1.0	1	0.8	2	2	3	3	4	6	5	3	2
Partly cloudy days (30–70%)	7	6	8	7	8	9	13	12	11	9	8	7
Cloudy days (≥ 70%)	23	21	22	22	21	18	15	15	13	17	19	22
Relative humidity (%)	86	84	81	79	79	78	74	73	74	75	79	84
Wind speed (mph)	11.8	10.6	9.8	9.3	7.7	7.0	6.8	6.7	8.0	10.0	11.1	11.4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	79	79	80	78	76	71
Clear days (≤ 30% cloud)	1.0	1	0.8	2	2	3
Partly cloudy days (30–70%)	7	6	8	7	8	9
Cloudy days (≥ 70%)	23	21	22	22	21	18
Relative humidity (%)	86	84	81	79	79	78
Wind speed (mph)	11.8	10.6	9.8	9.3	7.7	7.0

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	65	65	60	66	73	78
Clear days (≤ 30% cloud)	3	4	6	5	3	2
Partly cloudy days (30–70%)	13	12	11	9	8	7
Cloudy days (≥ 70%)	15	15	13	17	19	22
Relative humidity (%)	74	73	74	75	79	84
Wind speed (mph)	6.8	6.7	8.0	10.0	11.1	11.4

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Sandusky (NOAA GHCN station USW00014846), inside the city.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →