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September 21, 2021
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Quarterly Climate Impacts and Outlook for the Missouri River Basin June - August 2021. Dated September 2021.

Extreme heat and reduced precipitation in the region this summer had a major impact on crops, grasslands, and wildlife. Many states ranked in the top 10 warmest summers on record.  Below normal precipitation was present this season for most of the region.

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June 21, 2021
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Quarterly Climate Impacts and Outlook for the Missouri River Basin March - May 2021. Dated June 2021.

There were stark differences in both temperature and precipitation across the region this spring. Temperatures were, for the most part, near to below normal across much of the west and south, and near to above normal across the east.  Meanwhile, heavy precipitation fell across southern areas and little to none fell across the north.

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March 19, 2021
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Quarterly Climate Impacts and Outlook for the Missouri River Basin December 2020 – February 2021. Dated March 2021.

Temperatures this winter were extreme on both ends of the spectrum. Several states in the region ranked in the top 10 warmest Decembers and Januarys, while others ranked in the top 10 coldest Februarys.  Although much of the region was on the dry side this winter, only North Dakota ranked in the top 10 at 3rd driest.

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December 21, 2020
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Quarterly Climate Impacts and Outlook for the Missouri River Basin September – November 2020. Dated December 2020.

Autumn 2020 was one of the driest on record for several states, including North Dakota (3rd), Colorado (9th), Nebraska (9th), Kansas (19th), and South Dakota (20th). Although temperatures were, overall, near normal, autumn had many extremes.

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September 18, 2020
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Quarterly Climate Impacts and Outlook for the Missouri River Basin June – August 2020. Dated September 2020.

Summer 2020 was one of the warmest on record for many states in the region, including CO (3rd), NE (9th), ND (10th), SD (11th), and WY (11th). It was also one of the driest summers for CO (7th), IA (14th), NE (16th), and WY (16th).

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June 22, 2020
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Quarterly Climate Impacts and Outlook for the Missouri River Basin March – May 2020. Dated June 2020.

Temperatures were largely near normal across the region this spring, with the exception of Colorado, which had its 12th warmest spring since records began in 1895. Although flooding impacted parts of the region this spring, warm and dry conditions early in the season reduced the flood risk and subsequent impacts.

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March 23, 2020
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Quarterly Climate Impacts and Outlook for the Missouri River Basin December 2019 – February 2020. Dated March 2020.

Seasonal temperatures for the majority of the Missouri Basin were much above normal. The main exception to this warmth was the mountainous areas of Colorado and Wyoming.  Meanwhile, precipitation varied across the region, with the largest departures occurring across eastern parts of the region.

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December 22, 2019
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Quarterly Climate Impacts and Outlook for the Missouri River Basin September – November 2019. Dated December 2019.

Extreme temperature swings were masked by what was, overall, a largely near-normal autumn.The wet pattern continued across the northern tier of the Missouri River Basin. Overall, autumn 2019 was one of the wettest on record for North Dakota (wettest), South Dakota (5th), Iowa (6th), and Montana (11th).  ​

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Document Date
September 19, 2019
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Quarterly Climate Impacts and Outlook for the Missouri River Basin June – August 2019. Dated September 2019.

This summer, temperatures were largely near normal; however, minimum temperatures were slightly above normal, while maximum temperatures were below normal. Meanwhile, extremes in precipitation occurred across the region. This summer's wet conditions were a further continuation of a generally wet pattern that has been in place since last year.

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Document Date
June 21, 2019
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Quarterly Climate Impacts and Outlook for the Missouri River Basin March – May 2019. Dated June 2019.

Average temperatures generally ranged from 2-8°F below normal, with the greatest departures in the upper Basin.  Precipitation, on the other hand, was extreme, with spring totals exceeding 150% of normal in many areas.