Climate Chart of Pierre, USA

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

Climate overview

Temperature

The coolest monthly mean is January at -5.7 °C, while the warmest is July at 25.6 °C. These are averages for whole months, not daytime highs or a promise of what a particular day will feel like, so visitors should check forecasts close to travel. Across the calendar-month means, the unweighted mean temperature is 9.6 °C; it is a summary of those monthly averages, not a day-weighted annual average.

Rain

Mean daily rainfall reaches its highest monthly level in May at 2.86 mm/day, and its lowest in January at 0.06 mm/day. The figures are daily means, not monthly totals, and a lower mean does not guarantee rain-free days or indicate how often rain occurs. The unweighted mean of the monthly daily-rainfall means is 1.15 mm/day. It gives a broad summary, but not a forecast for any particular date.

Snow

Mean daily snowfall is highest in December at 5.47 mm/day. This is an average amount, not a measure of snowy-day frequency, snow depth or lasting cover, so it cannot establish what snow conditions a visitor will encounter. The unweighted mean of the monthly daily-snowfall means is 2.13 mm/day; it summarizes monthly averages and does not describe snow on any specific day.

Sunshine

Mean daily sunshine is highest in July at 13.11 hours/day and lowest in December at 5.80 hours/day. These averages can help with planning daylight outdoor activities, but sunshine duration is not the same as day length and does not guarantee clear conditions. The unweighted mean across the monthly sunshine averages is 9.16 hours/day per day, a calendar-month summary rather than a day-weighted annual figure.

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

For visitors prioritising cooler monthly averages, January is the relevant option in the temperature record, with a monthly mean of -5.7 °C. That average does not describe daytime highs or day-to-day variation, so use a forecast when choosing clothing and scheduling outdoor sightseeing. If lower average rainfall is the priority, January is the conditional option, with mean daily rainfall of 0.06 mm/day; this does not guarantee dry days or quantify rain frequency. In May, the mean daily amount is 2.86 mm/day, making rain-ready clothing or a flexible outdoor plan sensible preparation.

For daylight outdoor planning, mean daily sunshine is highest in July at 13.11 hours/day, while the lowest mean is in December at 5.80 hours/day. These are sunshine-duration averages, not day length or a guarantee of clear skies, and they point to a different criterion from rainfall or temperature rather than a single best time to visit. Snowfall’s highest monthly daily mean is 5.47 mm/day in December. The average cannot tell you how many snowy days to expect, whether snow will remain on the ground, or whether conditions suit a particular activity; check current forecasts if winter weather matters to your plans.

Climate Data Overview for Pierre, USA

Explore the comprehensive climate data for Pierre, 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.

• See also climate change in Pierre
• Explore the climate in USA