Climate Chart of Salem, USA

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

For Salem, USA, the climate data cover 2013–2023. Across this period, monthly mean temperatures ranged from December at 4.7 °C to August at 21.6 °C. The pattern also includes pronounced differences in average daily rainfall, sunshine and snowfall across the year. These figures offer a broad guide to typical monthly conditions, rather than a forecast of what a visitor will encounter on particular days.

Climate overview

Temperature

Monthly mean temperature reaches its high in August, at 21.6 °C, and its low in December, at 4.7 °C. These are averages for each month, not daytime highs or lows, so they describe the broad temperature pattern rather than the range visitors may experience within a day. The unweighted mean across monthly means is 12.0 °C; it summarizes the calendar-month averages without accounting for the number of days in each month.

Rain

Mean daily rainfall is lowest in July, at 0.20 mm/day, and highest in December, at 5.81 mm/day. These are daily averages within the respective months, not monthly rainfall totals, and they do not show how often rain falls or how it is distributed between days. The unweighted mean of the monthly daily averages is 2.94 mm/day, providing a broad summary rather than a day-weighted annual figure.

Sunshine

Average daily sunshine reaches its high in July, at 13.20 hours/day, and its low in December, at 3.89 hours/day. The measure is mean sunshine duration per day, not day length, and monthly averages cannot guarantee the sunshine available on a particular outing. The unweighted mean across monthly values is 8.28 hours/day.

Snow

Mean daily snowfall is highest in February, at 2.59 mm/day. The unweighted mean across monthly daily snowfall averages is 0.52 mm/day. These amounts do not indicate the number of snowy days, snow depth or whether snow cover is present, so they cannot establish conditions for any particular visit.

Best Travel Time Guide for Salem, USA: Ideal Seasons and Weather Insights

If lower average rainfall is your priority, July is the conditional option in the monthly figures, with mean daily rainfall of 0.20 mm/day. That average does not guarantee dry days or describe rain frequency, so keep plans flexible and be prepared for changing conditions. For rain preparation, note that mean daily rainfall is highest in December, at 5.81 mm/day; these are daily means, not monthly totals. For visitors prioritising cooler monthly averages, December has the lowest monthly mean temperature, 4.7 °C; this is not a daytime minimum or a prediction for each day. Outdoor-sightseeing plans focused on average sunshine can look to July, with 13.20 hours/day of mean daily sunshine, while December has the lowest mean at 3.89 hours/day. Sunshine duration is not day length, and neither monthly average guarantees the conditions on a given date.

Climate Data Overview for Salem, USA

Explore the comprehensive climate data for Salem, USA. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

Month	Average: Temperature °C	Rain (mm) / day	Snow (mm) / day	Sunshine (h) / day
Jan	5.0	4.67	0.75	4.38
Feb	5.4	4.18	2.59	5.31
Mar	7.4	3.70	1.16	7.13
Apr	9.9	3.26	0.34	8.76
May	13.9	1.93	0.01	10.50
Jun	17.4	1.34	0.00	12.06
Jul	21.1	0.20	0.00	13.20
Aug	21.6	0.27	0.00	12.02
Sep	17.7	1.80	0.00	9.75
Oct	12.4	3.31	0.00	7.16
Nov	7.4	4.76	0.05	5.15
Dec	4.7	5.81	1.29	3.89
Average	12.0	2.94	0.52	8.28